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Comment:1.0.32.0
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | sourceforge
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SHA1: 4c037f4d503feebcfe3f08db55be84d2ce4fab31
User & Date: rmsimpson 2006-08-07 03:50:49.000
Context
2006-08-07
04:13
1.0.32.0 check-in: 531b78f4a7 user: rmsimpson tags: sourceforge
03:50
1.0.32.0 check-in: 4c037f4d50 user: rmsimpson tags: sourceforge
2006-08-06
18:17
1.0.32.0 check-in: 71293812a7 user: rmsimpson tags: sourceforge
Changes
Unified Diff Ignore Whitespace Patch
Changes to Doc/Extra/dbfactorysupport.html. 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>

    <title>DBProviderFactories Support</title>
    <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
    <link rel="stylesheet" type="text/css" href="MSDN.css">

  </head>
  <body id="bodyID" class="dtBODY">

    <div id="nsbanner">








      <div id="bannerrow1">
        <table class="bannerparthead" cellspacing="0" ID="Table1">
          <tr id="hdr">

            <td class="runninghead">DbProviderFactories Support</td>








            <td class="product">


            </td>
          </tr>
        </table>







      </div>
      <div id="TitleRow">
        <h1 class="dtH1">SQLite.NET Class Library Documentation</h1>



      </div>


    </div>

    <div id="nstext">
      <h1 class="dtH1">DbProviderFactories and You</h1>
      <p>One of the great new features of ADO.NET 2.0 is the use of reflection as a 
        means of instantiating database providers programmatically. The information 
        .NET uses to enumerate the available data providers in the system is relatively 
        simple. It merely looks in the machine.config and in your own app.config file for some XML data to tell it what providers are 
        installed and what assemblies those providers are in.
      </p>
      <h4>

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<html dir="LTR" xmlns="http://www.w3.org/1999/xhtml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:tool="http://www.microsoft.com/tooltip" xmlns:ndoc="urn:ndoc-preprocess">

  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252" />
    <title>DbProviderFactory Support</title>
    <link rel="stylesheet" type="text/css" href="ndoc.css"> </link>

    <link rel="stylesheet" type="text/css" href="user.css"> </link>
    <script type="text/javascript" src="ndoc.js"> </script>
  </head>
  <body style="display: none;">
    <input type="hidden" id="userDataCache" class="userDataStyle" />
    <input type="hidden" id="hiddenScrollOffset" />
    <img id="dropDownImage" style="display:none; height:0; width:0;" src="drpdown.gif" />
    <img id="dropDownHoverImage" style="display:none; height:0; width:0;" src="drpdown_orange.gif" />
    <img id="collapseImage" style="display:none; height:0; width:0;" src="collapse.gif" />
    <img id="expandImage" style="display:none; height:0; width:0;" src="exp.gif" />
    <img id="collapseAllImage" style="display:none; height:0; width:0;" src="collall.gif" />
    <img id="expandAllImage" style="display:none; height:0; width:0;" src="expall.gif" />
    <img id="copyImage" style="display:none; height:0; width:0;" src="copycode.gif" />
    <img id="copyHoverImage" style="display:none; height:0; width:0;" src="copycodeHighlight.gif" />
    <div id="header">
      <table width="100%" id="topTable">
        <tr id="headerTableRow1">
          <td align="left">
            <span id="runningHeaderText">DbProviderFactory Support</span>
          </td>
        </tr>
        <tr id="headerTableRow2">
          <td align="left">
            <span id="nsrTitle">SQLite.NET Class Library Documentation</span>
          </td>
        </tr>
        <tr id="headerTableRow3" style="display:none">
          <td>
            <a id="seeAlsoSectionLink" href="#seeAlsoToggle" onclick="OpenSection(seeAlsoToggle)">See Also</a>
            <a id="exampleSectionLink" href="#codeExampleToggle" onclick="OpenSection(codeExampleToggle)">Example</a>
          </td>
        </tr>
     </table>
      <table width="100%" id="bottomTable" cellspacing="0" cellpadding="0" style="display:none">
        <tr>
          <td>
            <span onclick="ExpandCollapseAll(toggleAllImage)" style="cursor:default;" onkeypress="ExpandCollapseAll_CheckKey(toggleAllImage)" tabindex="0">
              <img ID="toggleAllImage" class="toggleAll" src="collall.gif" />
              <label id="collapseAllLabel" for="toggleAllImage" style="display: none;">
							Collapse All
						</label>
              <label id="expandAllLabel" for="toggleAllImage" style="display: none;">

							Expand All
						</label>
            </span>
          </td>
        </tr>
      </table>
    </div>
    <div id="mainSection">
    <div id="mainBody">
      <h1 class="heading">DbProviderFactories and You</h1>
      <p>One of the great new features of ADO.NET 2.0 is the use of reflection as a 
        means of instantiating database providers programmatically. The information 
        .NET uses to enumerate the available data providers in the system is relatively 
        simple. It merely looks in the machine.config and in your own app.config file for some XML data to tell it what providers are 
        installed and what assemblies those providers are in.
      </p>
      <h4>
︙︙
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&lt;configuration&gt;
  &lt;system.data&gt;
    &lt;DbProviderFactories&gt;
      &lt;remove invariant="System.Data.SQLite"/&gt;
      &lt;add name="SQLite Data Provider" invariant="System.Data.SQLite" 
           description=".Net Framework Data Provider for SQLite"
           type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite,
                 Version=1.0.29.0, Culture=neutral,
                 PublicKeyToken=db937bc2d44ff139"/&gt;
    &lt;/DbProviderFactories&gt;
  &lt;/system.data&gt;
&lt;/configuration&gt;
</pre>
      </div>
      <p>








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&lt;configuration&gt;
  &lt;system.data&gt;
    &lt;DbProviderFactories&gt;
      &lt;remove invariant="System.Data.SQLite"/&gt;
      &lt;add name="SQLite Data Provider" invariant="System.Data.SQLite" 
           description=".Net Framework Data Provider for SQLite"
           type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite,
                 Version=1.0.32.0, Culture=neutral,
                 PublicKeyToken=db937bc2d44ff139"/&gt;
    &lt;/DbProviderFactories&gt;
  &lt;/system.data&gt;
&lt;/configuration&gt;
</pre>
      </div>
      <p>
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        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite.NET%20Class%20Library%20Documentation%20Feedback:%20Factory%20Support">
            Send comments on this topic.</a>
        </p>
        <p>
        </p>
      </div>

    </div>
  </body>
</html>








>




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        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite.NET%20Class%20Library%20Documentation%20Feedback:%20Factory%20Support">
            Send comments on this topic.</a>
        </p>
        <p>
        </p>
      </div>
    </div>
    </div>
  </body>
</html>
Changes to Doc/Extra/designer.html. 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>

    <title>Design-Time Support</title>
    <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
    <link rel="stylesheet" type="text/css" href="MSDN.css">

  </head>
  <body id="bodyID" class="dtBODY">










    <div id="nsbanner">
      <div id="bannerrow1">
        <table class="bannerparthead" cellspacing="0" ID="Table1">




          <tr id="hdr">
            <td class="runninghead">

              Design-Time&nbsp;Support</td>


            <td class="product">


            </td>
          </tr>
        </table>







      </div>
      <div id="TitleRow">
        <h1 class="dtH1">SQLite.NET Class Library Documentation</h1>



      </div>


    </div>

    <div id="nstext">

      <h1 class="dtH1">Installing SQLite Visual Studio Design-Time Support</h1>
      <p>Supporting the Visual Studio query designer and allowing you to manipulate 
        SQLite databases from within Visual Studio is a great time-saver.&nbsp; Though 
        the support is not yet fully-implemented, there's certainly enough there to 
        keep you busy.&nbsp; You can create databases, design and execute queries, 
        create typed datasets and lots more all from Visual Studio.</p>
      <h3> Installation Instructions</h3>
      <p>
        In Windows Explorer, navigate to <STRONG>SQLite.Net\bin\Designer</STRONG>
        and execute the <STRONG>INSTALL.EXE</STRONG> program.&nbsp; It will automatically
        detect what eligible Visual Studio products are installed, and allow you to check
        and uncheck which environments to install the designer for.</p>
      <h3> Express Edition Limitations</h3>
      <p>All Express Editions (except Visual Web Developer) are hard-coded to only allow you to design for Jet and Sql Server Database Files.&nbsp; The only way for SQLite
        to install its designer is to temporarily replace one of the existing "approved"
        designers.&nbsp; Therefore, when you install the SQLite designer for one of these
        express editions, it will temporarily replace the Microsoft Access designer.&nbsp;
        You can revert back to the Access designer simply by re-running the install.exe
        program and un-checking the boxes.</p>
      <hr>
      <div id="footer">
        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite.NET%20Class%20Library%20Documentation%20Feedback:%20Designer%20Support">
            Send comments on this topic.</a>
        </p>
        <p>
        </p>
      </div>

    </div>
  </body>
</html>

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<html dir="LTR" xmlns="http://www.w3.org/1999/xhtml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:tool="http://www.microsoft.com/tooltip" xmlns:ndoc="urn:ndoc-preprocess">

  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252" />
    <title>Design-Time Support</title>
    <link rel="stylesheet" type="text/css" href="ndoc.css"> </link>

    <link rel="stylesheet" type="text/css" href="user.css"> </link>
    <script type="text/javascript" src="ndoc.js"> </script>
  </head>
  <body style="display: none;">
    <input type="hidden" id="userDataCache" class="userDataStyle" />
    <input type="hidden" id="hiddenScrollOffset" />
    <img id="dropDownImage" style="display:none; height:0; width:0;" src="drpdown.gif" />
    <img id="dropDownHoverImage" style="display:none; height:0; width:0;" src="drpdown_orange.gif" />
    <img id="collapseImage" style="display:none; height:0; width:0;" src="collapse.gif" />
    <img id="expandImage" style="display:none; height:0; width:0;" src="exp.gif" />
    <img id="collapseAllImage" style="display:none; height:0; width:0;" src="collall.gif" />
    <img id="expandAllImage" style="display:none; height:0; width:0;" src="expall.gif" />
    <img id="copyImage" style="display:none; height:0; width:0;" src="copycode.gif" />
    <img id="copyHoverImage" style="display:none; height:0; width:0;" src="copycodeHighlight.gif" />
    <div id="header">
      <table width="100%" id="topTable">
        <tr id="headerTableRow1">
          <td align="left">
            <span id="runningHeaderText">Design-Time Support</span>
          </td>
        </tr>
        <tr id="headerTableRow2">
          <td align="left">
            <span id="nsrTitle">SQLite.NET Class Library Documentation</span>
          </td>
        </tr>
        <tr id="headerTableRow3" style="display:none">
          <td>
            <a id="seeAlsoSectionLink" href="#seeAlsoToggle" onclick="OpenSection(seeAlsoToggle)">See Also</a>
            <a id="exampleSectionLink" href="#codeExampleToggle" onclick="OpenSection(codeExampleToggle)">Example</a>
          </td>
        </tr>
     </table>
      <table width="100%" id="bottomTable" cellspacing="0" cellpadding="0" style="display:none">
        <tr>
          <td>
            <span onclick="ExpandCollapseAll(toggleAllImage)" style="cursor:default;" onkeypress="ExpandCollapseAll_CheckKey(toggleAllImage)" tabindex="0">
              <img ID="toggleAllImage" class="toggleAll" src="collall.gif" />
              <label id="collapseAllLabel" for="toggleAllImage" style="display: none;">
							Collapse All
						</label>
              <label id="expandAllLabel" for="toggleAllImage" style="display: none;">

							Expand All
						</label>
            </span>
          </td>
        </tr>
      </table>
    </div>
    <div id="mainSection">
    <div id="mainBody">

      <h1 class="heading">Installing SQLite Visual Studio Design-Time Support</h1>
      <p>Supporting the Visual Studio query designer and allowing you to manipulate 
        SQLite databases from within Visual Studio is a great time-saver.&nbsp; Though 
        the support is not yet fully-implemented, there's certainly enough there to 
        keep you busy.&nbsp; You can create databases, design and execute queries, 
        create typed datasets and lots more all from Visual Studio.</p>
      <h3> Installation Instructions</h3>
      <p>
        In Windows Explorer, navigate to <STRONG>SQLite.Net\bin\Designer</STRONG>
        and execute the <STRONG>INSTALL.EXE</STRONG> program.&nbsp; It will automatically
        detect what eligible Visual Studio products are installed, and allow you to check
        and uncheck which environments to install the designer for.</p>
      <h3> Express Edition Limitations</h3>
      <p>All Express Editions (except Visual Web Developer) are hard-coded to only allow you to design for Jet and Sql Server Database Files.&nbsp; The only way for SQLite
        to install its designer is to temporarily replace one of the existing "approved"
        designers.&nbsp; Therefore, when you install the SQLite designer for one of these
        express editions, it will temporarily replace the Microsoft Access designer.&nbsp;
        You can revert back to the Access designer simply by re-running the install.exe
        program and un-checking the boxes.</p>
      <hr/>
      <div id="footer">
        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite.NET%20Class%20Library%20Documentation%20Feedback:%20Designer%20Support">
            Send comments on this topic.</a>
        </p>
        <p>
        </p>
      </div>
    </div>
    </div>
  </body>
</html>
Changes to Doc/Extra/limitations.html. 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>

    <title>Getting Started</title>
    <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
    <link rel="stylesheet" type="text/css" href="MSDN.css">

  </head>
  <body id="bodyID" class="dtBODY">

    <div id="nsbanner">








      <div id="bannerrow1">
        <table class="bannerparthead" cellspacing="0" ID="Table1">
          <tr id="hdr">

            <td class="runninghead">Provider Limitations</td>








            <td class="product">


            </td>
          </tr>
        </table>







      </div>
      <div id="TitleRow">
        <h1 class="dtH1">SQLite.NET Class Library Documentation</h1>



      </div>


    </div>

    <div id="nstext">
      <h1 class="dtH1">Limitations of this ADO.NET SQLite Data Provider</h1>
      <p>As providers go, this one doesn't have many restrictions. SQLite has no 
        support for row-level or table-level locks. When a connection locks the database for writing, no other connection or process may read or write to the database until the write operation is complete.  The SQLite.NET provider attempts to retry 
        internally if a database is locked, up to the CommandTimeout property of the 
        command in question.</p>
      <p>SQLite is inherently type-less, and only understands a few basic datatypes 
        natively. They are (in .NET-speak) Int64, Double, String and Blob. The 
        SQLite.NET provider will use the database schema information it can glean to 
        enforce type-ness, but it is an inexact science.</p>
      <p>Nested transactions and hierarchical DataReaders are not supported. In the 
        case of transactions, any SQLiteCommand created on a connection will (when 
        executed) automatically join a transaction in progress, regardless of whether 
        that transaction was created before or after the command.</p>
      <p>A SQLiteCommand object <b>can</b> be re-assigned a new SQLiteConnection object 
        as long as no DataReaders are active on the command.</p>
      <p>Opening a transaction is considered a write operation, so only use them when 
        you want to write to the database! If you hold open a transaction, all readers 
        will be blocked until the transaction is closed!</p>
      <p></p>
      <h4 class="dtH4">Thread Safety</h4>
      <p>Multi-threading in SQLite must be done carefully. Here are the restrictions:</p>
      <ul>
        <li>
          <b>You May</b>
        Clone() a SQLiteConnection object in one thread and pass the cloned object to 
        another thread. Once passed, the other thread becomes the new owner of the 
        cloned connection, and the original thread must not keep a reference to the 

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<html dir="LTR" xmlns="http://www.w3.org/1999/xhtml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:tool="http://www.microsoft.com/tooltip" xmlns:ndoc="urn:ndoc-preprocess">

  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252" />
    <title>Provider Limitations</title>
    <link rel="stylesheet" type="text/css" href="ndoc.css"> </link>

    <link rel="stylesheet" type="text/css" href="user.css"> </link>
    <script type="text/javascript" src="ndoc.js"> </script>
  </head>
  <body style="display: none;">
    <input type="hidden" id="userDataCache" class="userDataStyle" />
    <input type="hidden" id="hiddenScrollOffset" />
    <img id="dropDownImage" style="display:none; height:0; width:0;" src="drpdown.gif" />
    <img id="dropDownHoverImage" style="display:none; height:0; width:0;" src="drpdown_orange.gif" />
    <img id="collapseImage" style="display:none; height:0; width:0;" src="collapse.gif" />
    <img id="expandImage" style="display:none; height:0; width:0;" src="exp.gif" />
    <img id="collapseAllImage" style="display:none; height:0; width:0;" src="collall.gif" />
    <img id="expandAllImage" style="display:none; height:0; width:0;" src="expall.gif" />
    <img id="copyImage" style="display:none; height:0; width:0;" src="copycode.gif" />
    <img id="copyHoverImage" style="display:none; height:0; width:0;" src="copycodeHighlight.gif" />
    <div id="header">
      <table width="100%" id="topTable">
        <tr id="headerTableRow1">
          <td align="left">
            <span id="runningHeaderText">Provider Limitations</span>
          </td>
        </tr>
        <tr id="headerTableRow2">
          <td align="left">
            <span id="nsrTitle">SQLite.NET Class Library Documentation</span>
          </td>
        </tr>
        <tr id="headerTableRow3" style="display:none">
          <td>
            <a id="seeAlsoSectionLink" href="#seeAlsoToggle" onclick="OpenSection(seeAlsoToggle)">See Also</a>
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    <div id="mainSection">
    <div id="mainBody">
      <h1 class="heading">Limitations of this ADO.NET SQLite Data Provider</h1>
      <p>As providers go, this one doesn't have many restrictions. SQLite has no 
        support for row-level or table-level locks. When a connection locks the database for writing, no other connection or process may read or write to the database until the write operation is complete.  The SQLite.NET provider attempts to retry 
        internally if a database is locked, up to the CommandTimeout property of the 
        command in question.</p>
      <p>SQLite is inherently type-less, and only understands a few basic datatypes 
        natively. They are (in .NET-speak) Int64, Double, String and Blob. The 
        SQLite.NET provider will use the database schema information it can glean to 
        enforce type-ness, but it is an inexact science.</p>
      <p>Nested transactions and hierarchical DataReaders are not supported. In the 
        case of transactions, any SQLiteCommand created on a connection will (when 
        executed) automatically join a transaction in progress, regardless of whether 
        that transaction was created before or after the command.</p>
      <p>A SQLiteCommand object <b>can</b> be re-assigned a new SQLiteConnection object 
        as long as no DataReaders are active on the command.</p>
      <p>Opening a transaction is considered a write operation, so only use them when 
        you want to write to the database! If you hold open a transaction, all readers 
        will be blocked until the transaction is closed!</p>
      <p></p>
      <h4 class="subHeading">Thread Safety</h4>
      <p>Multi-threading in SQLite must be done carefully. Here are the restrictions:</p>
      <ul>
        <li>
          <b>You May</b>
        Clone() a SQLiteConnection object in one thread and pass the cloned object to 
        another thread. Once passed, the other thread becomes the new owner of the 
        cloned connection, and the original thread must not keep a reference to the
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        therefore your own responsibility in a multi-threaded environment to handle 
        potential timeouts that may occur if a long-running query in one thread 
        prevents a query in another thread from executing. These timeouts will only 
        occur if one thread is attempting to read while another thread is attempting to 
        write. Whichever thread got its lock first will be the one to execute, and the 
        other thread will block until the CommandTimeout value elapses or the other 
        thread finishes.</p>
      <hr>
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        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite.NET%20Class%20Library%20Documentation%20Feedback:%20Limitations">
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        therefore your own responsibility in a multi-threaded environment to handle 
        potential timeouts that may occur if a long-running query in one thread 
        prevents a query in another thread from executing. These timeouts will only 
        occur if one thread is attempting to read while another thread is attempting to 
        write. Whichever thread got its lock first will be the one to execute, and the 
        other thread will block until the CommandTimeout value elapses or the other 
        thread finishes.</p>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>

    <title>Optimizing SQLite</title>
    <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
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      <div id="bannerrow1">
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            <td class="runninghead">Optimizing for SQLite</td>








            <td class="product">


            </td>
          </tr>
        </table>







      </div>
      <div id="TitleRow">
        <h1 class="dtH1">SQLite.NET Class Library Documentation</h1>



      </div>


    </div>

    <div id="nstext">
      <h1 class="dtH1">Tips on Optimizing Your Queries</h1>
      <p>The next few paragraphs will attempt to give you a few rudimentary rules for 
        speeding up your queries in general, and especially how SQLite is adversely 
        affected by the kinds of SQL behaviors you may have taken for granted in other 
        providers. It is by no means a complete optimization guide. For even more 
        details on optimizing your queries, visit <a href="http://www.sqlite.org">sqlite.org</a>.</p>
      <h4 class="dtH4">The Importance of Transactions</h4>
      <p>If you are inserting data in SQLite without first starting a transaction: <b>DO 
          NOT PASS GO! Call BeginTransaction() right now, and finish with Commit()!</b> 
        If you think I'm kidding, think again. SQLite's A.C.I.D. design means that 
        every single time you insert any data outside a transaction, an implicit 
        transaction is constructed, the insert made, and the transaction destructed. <b>EVERY 
          TIME.</b> If you're wondering why in the world your inserts are taking 100x 
        longer than you think they should, look no further.</p>
      <h4 class="dtH4">Prepared Statements</h4>
      <p>Lets have a quick look at the following code and evaluate its performance:</p>
      <div class="syntax">
        <pre>
      using (SQLiteCommand mycommand = new SQLiteCommand(myconnection))
      {
        int n;
        

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<html dir="LTR" xmlns="http://www.w3.org/1999/xhtml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:tool="http://www.microsoft.com/tooltip" xmlns:ndoc="urn:ndoc-preprocess">

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          </td>
        </tr>
        <tr id="headerTableRow2">
          <td align="left">
            <span id="nsrTitle">SQLite.NET Class Library Documentation</span>
          </td>
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          <td>
            <a id="seeAlsoSectionLink" href="#seeAlsoToggle" onclick="OpenSection(seeAlsoToggle)">See Also</a>
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            </span>
          </td>
        </tr>
      </table>
    </div>
    <div id="mainSection">
    <div id="mainBody">
      <h1 class="heading">Tips on Optimizing Your Queries</h1>
      <p>The next few paragraphs will attempt to give you a few rudimentary rules for 
        speeding up your queries in general, and especially how SQLite is adversely 
        affected by the kinds of SQL behaviors you may have taken for granted in other 
        providers. It is by no means a complete optimization guide. For even more 
        details on optimizing your queries, visit <a href="http://www.sqlite.org">sqlite.org</a>.</p>
      <h4 class="subHeading">The Importance of Transactions</h4>
      <p>If you are inserting data in SQLite without first starting a transaction: <b>DO 
          NOT PASS GO! Call BeginTransaction() right now, and finish with Commit()!</b> 
        If you think I'm kidding, think again. SQLite's A.C.I.D. design means that 
        every single time you insert any data outside a transaction, an implicit 
        transaction is constructed, the insert made, and the transaction destructed. <b>EVERY 
          TIME.</b> If you're wondering why in the world your inserts are taking 100x 
        longer than you think they should, look no further.</p>
      <h4 class="subHeading">Prepared Statements</h4>
      <p>Lets have a quick look at the following code and evaluate its performance:</p>
      <div class="syntax">
        <pre>
      using (SQLiteCommand mycommand = new SQLiteCommand(myconnection))
      {
        int n;
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        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite.NET%20Class%20Library%20Documentation%20Feedback:%20Optimizing">
            Send comments on this topic.</a>
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        </p>
      </div>

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        <p>
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    <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
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            <td class="product">


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        </table>
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      <div id="TitleRow">
        <h1 class="dtH1">SQLite.NET Class Library Documentation</h1>









      </div>









    </div>

    <div id="nstext">














      <h1 class="dtH1">Version History</h1>
    <p><b>1.0.29.0 - May 16, 2006</b></p>
    <ul>
    <li>Fixed a bug in the Views schema information which caused multi-line view definition statements not to be parsed</li>
    <li>Fixed a parsing bug in SQLiteDataReader.GetSchemaTable() to account for numeric(x,y) datatypes with specified precision and scale</li>
    <li>Fixed a bug in SQLiteConnection.Open() which tried to automatically enlist in an ambient transaction but had not yet set the state of the database to Opened, thereby causing a transaction fault</li>
    <li>Changed SQLiteException to inherit from DbException on the full framework</li>
    </ul>

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    <div id="mainBody">

      <h1 class="heading">Version History</h1>
 <p><b>1.0.32.0 - August 6, 2006</b></p>
    <ul>
    <li>Added AllowPartiallyTrustedCallers attribute to the assembly</li><li>Added the missing "nchar" type</li>
      <li>Added support for binary Guid's.&nbsp; Guids are now stored as binary by default
        when using parameterized queries.&nbsp; Text guids are still fully supported.</li>
      <li>Fixed a TransactionScope() error that caused the transaction not to be completed.</li>
      <li>Enhanced parameter names so that if they are added to the Parameters collection
        without their prefix character (@ : or $) they are still properly mapped.&nbsp;</li>
    </ul>
        <p><b>1.0.31.0 - July 16, 2006</b></p>
    <ul>
    <li>Re-applied the view parsing bugfix in 1.0.29.0 that was accidentally reverted
      out of the 30 build.</li><li>Fixed SQLiteCommand.ExecuteScalar() to return null instead of DbNull.Value
    when no rows were returned.</li>
      <li>Design-time installer now installs the package-based designer on full Visual Studio
        versions.&nbsp; Express editions continue to use the packageless designer.</li>
      <li>In Visual Studio (not Express), you can now right-click a SQLite connection in
        the Server Explorer and vacuum the database and change the encryption password.</li>
    </ul>
    <p><b>1.0.30.1 - July 2, 2006</b></p>
    <ul>
    <li>Code merge with SQLite 3.3.6</li>
      <li>Added support for the |DataDirectory| keyword in the Data Source filename string.&nbsp;
      </li>
      <li>Added hook notification support to SQLiteConnection.&nbsp; Specifically, there
      are three new events on the SQLiteConnection object which are raised when an update/insert/delete
      occurs and when transactions are committed and rolled back.</li><li>Changed SQLiteTransaction to default to BEGIN IMMEDIATE instead of just BEGIN,
    which solves a multithreaded race condition.&nbsp;</li>
      <li>Changed SQLiteDataReader to better support SQLite's typelessness.&nbsp; The data
        reader no longer caches column affinity, but re-evaluates it for each column/row.</li>
      <li>Fixed a bug in Prepare() which caused an intermittant fault due to the code accessing
        the memory of an unpinned variable.&nbsp;</li>
      <li>Fixed a multithreaded lock-retry bug in in SQLiteConnection.Open() and in
    SQLiteTransaction, which failed to use a command timeout before giving up.</li>
    </ul>

    <p><b>1.0.29.0 - May 16, 2006</b></p>
    <ul>
    <li>Fixed a bug in the Views schema information which caused multi-line view definition statements not to be parsed</li>
    <li>Fixed a parsing bug in SQLiteDataReader.GetSchemaTable() to account for numeric(x,y) datatypes with specified precision and scale</li>
    <li>Fixed a bug in SQLiteConnection.Open() which tried to automatically enlist in an ambient transaction but had not yet set the state of the database to Opened, thereby causing a transaction fault</li>
    <li>Changed SQLiteException to inherit from DbException on the full framework</li>
    </ul>
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        Reworked the whole interop.c thing into interop.h and reduced the code required 
        to merge the main sqlite3 codebase.
        <LI>
          Added support for user-defined collations.
        </LI>
      </UL>
      <hr>
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        Reworked the whole interop.c thing into interop.h and reduced the code required 
        to merge the main sqlite3 codebase.
        <LI>
          Added support for user-defined collations.
        </LI>
      </UL>
      <hr />
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            <td class="runninghead">SQLite.NET Class Library</td>



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        <h1 class="dtH1">SQLite.NET Class Library Documentation</h1>



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    <div id="nstext">
      <h1 class="dtH1">About SQLite.NET</h1>
      <p>This class library is an ADO.NET 2.0 wrapper around the popular (and free!) 
        SQLite database engine. For information on SQL syntax, features of SQLite and a 
        good understanding of how it works and what it does, I highly recommend heading 
        over to <a target="_blank" href="http://www.sqlite.org">sqlite.org</a> and 
        reading the documentation there.</p>
      <P>The C# provider, the very minor C code modifications to SQLite, documentation and 
        etc&nbsp;were written by <A href="mailto:robert@blackcastlesoft.com">Robert 
          Simpson</A>, and the SourceForge project page can be found <A target="_blank" href="http://sourceforge.net/projects/sqlite-dotnet2">
          here</A>.</P>
      <DIV>
        <br>
      </DIV>
      <h1 class="dtH1">What's New?</h1>
      <p><a href="version.html">Click here to see the version history of this SQLite.NET 
          provider</a></p>
      <DIV>
        <br>
      </DIV>
      <h1 class="dtH1">What's Coming Up?</h1>
      <p>There's a few things I'm aiming to do in the near future:&nbsp;</p>
      <DIV>
        <ul>
          <LI>
            More&nbsp;class documentation and examples.&nbsp; I'll also be integrating a 
            lot of the documentation from the official <A target="_blank" href="http://www.sqlite.org">
              sqlite.org</A> website into the helpfile for quick and easy access.</LI>
          <li>Design-time support for DDL, enabling you to create/alter tables, manage indexes
            and foreign keys, etc.</li>
          </ul>
      </DIV>
      <br>
      <h1 class="dtH1">Using this library</h1>
      <p>The following are links to information on various aspects of the library and 
        how to use it in your application(s)
      </p>
      <p><a href="designer.html">How to install&nbsp;Visual Studio Design-Time Support</a></p>
      <P><A href="dbfactorysupport.html">How to configure and enumerate SQLite.NET 
          through the DbProviderFactories object</A></P>
      <p><a href="optimizing.html">Getting the best performance out of SQLite</a></p>
      <p><a href="limitations.html">Limitations of the SQLite.NET provider and the SQLite 
          engine (compared to other providers and engines)</a></p>
      <br>
      <h1 class="dtH1">SQLite.NET Provider Features</h1>
      <p>This SQLite provider implements every feature of the underlying SQLite 
        database engine without omission. Here's a brief summary:</p>
      <UL>
        <LI>
        Written from scratch on VS2005 specifically for ADO.NET 2.0, implenting all the
        base classes and features recently introduced in the framework, including automatic
        transaction enlistment.<li>Supports the Full and Compact .NET Framework, as well as

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            <span id="runningHeaderText">SQLite ADO.NET 2.0 Provider</span>
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            <span id="nsrTitle">SQLite.NET Class Library Documentation</span>
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            <a id="seeAlsoSectionLink" href="#seeAlsoToggle" onclick="OpenSection(seeAlsoToggle)">See Also</a>
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      <h1 class="heading">About SQLite.NET</h1>
      <p>This class library is an ADO.NET 2.0 wrapper around the popular (and free!) 
        SQLite database engine. For information on SQL syntax, features of SQLite and a 
        good understanding of how it works and what it does, I highly recommend heading 
        over to <a target="_blank" href="http://www.sqlite.org">sqlite.org</a> and 
        reading the documentation there.</p>
      <P>The C# provider, the very minor C code modifications to SQLite, documentation and 
        etc&nbsp;were written by <A href="mailto:robert@blackcastlesoft.com">Robert 
          Simpson</A>, and the SourceForge project page can be found <A target="_blank" href="http://sourceforge.net/projects/sqlite-dotnet2">
          here</A>.</P>
      <DIV>
        <br>
      </DIV>
      <h1 class="heading">What's New?</h1>
      <p><a href="version.html">Click here to see the version history of this SQLite.NET 
          provider</a></p>
      <DIV>
        <br>
      </DIV>
      <h1 class="heading">What's Coming Up?</h1>
      <p>There's a few things I'm aiming to do in the near future:&nbsp;</p>
      <DIV>
        <ul>
          <LI>
            More&nbsp;class documentation and examples.&nbsp; I'll also be integrating a 
            lot of the documentation from the official <A target="_blank" href="http://www.sqlite.org">
              sqlite.org</A> website into the helpfile for quick and easy access.</LI>
          <li>Design-time support for DDL, enabling you to create/alter tables, manage indexes
            and foreign keys, etc.</li>
          </ul>
      </DIV>
      <br>
      <h1 class="heading">Using this library</h1>
      <p>The following are links to information on various aspects of the library and 
        how to use it in your application(s)
      </p>
      <p><a href="designer.html">How to install&nbsp;Visual Studio Design-Time Support</a></p>
      <P><A href="dbfactorysupport.html">How to configure and enumerate SQLite.NET 
          through the DbProviderFactories object</A></P>
      <p><a href="optimizing.html">Getting the best performance out of SQLite</a></p>
      <p><a href="limitations.html">Limitations of the SQLite.NET provider and the SQLite 
          engine (compared to other providers and engines)</a></p>
      <br>
      <h1 class="heading">SQLite.NET Provider Features</h1>
      <p>This SQLite provider implements every feature of the underlying SQLite 
        database engine without omission. Here's a brief summary:</p>
      <UL>
        <LI>
        Written from scratch on VS2005 specifically for ADO.NET 2.0, implenting all the
        base classes and features recently introduced in the framework, including automatic
        transaction enlistment.<li>Supports the Full and Compact .NET Framework, as well as
︙︙
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        Full support for user-defined collating sequences, every bit as simple to 
        implement as user-defined functions and uses the same base class. </li>
        <li>
          Full source for the entire engine and wrapper.&nbsp; No copyrights.&nbsp; 
          Public Domain.&nbsp; 100% free for commercial and non-commercial use.&nbsp;</li>
      </UL>
      <br>
      <h1 class="dtH1">Distributing the Binaries</h1>
      <p><b>System.Data.SQLite.DLL</b> is a mixed assembly signed with a strong name 
        in case you want to add it to the Global Assembly Cache (GAC). This is the only DLL required to be redistributed with 
        your SQLite.NET application(s).&nbsp; It 
        comes in&nbsp;4
        flavors: Win32, Itanium, X64 (AMD64) and ARM (Compact Framework).&nbsp; The Compact
        Framework library is signed with a separate strong name, but all the other
        versions share the same strong name so they can be interchanged where appropriate without
        any change to your application.</p>
      <hr>
      <div id="footer">
        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite.NET%20Class%20Library%20Documentation%20Feedback:%20Welcome">
            Send comments on this topic.</a>
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        Full support for user-defined collating sequences, every bit as simple to 
        implement as user-defined functions and uses the same base class. </li>
        <li>
          Full source for the entire engine and wrapper.&nbsp; No copyrights.&nbsp; 
          Public Domain.&nbsp; 100% free for commercial and non-commercial use.&nbsp;</li>
      </UL>
      <br>
      <h1 class="heading">Distributing the Binaries</h1>
      <p><b>System.Data.SQLite.DLL</b> is a mixed assembly signed with a strong name 
        in case you want to add it to the Global Assembly Cache (GAC). This is the only DLL required to be redistributed with 
        your SQLite.NET application(s).&nbsp; It 
        comes in&nbsp;4
        flavors: Win32, Itanium, X64 (AMD64) and ARM (Compact Framework).&nbsp; The Compact
        Framework library is signed with a separate strong name, but all the other
        versions share the same strong name so they can be interchanged where appropriate without
        any change to your application.</p>
      <hr />
      <div id="footer">
        <p>
          <a href="mailto:robert@blackcastlesoft.com?subject=SQLite%20ADO.NET%202.0%20Provider%201.0.0.0%20Documentation%20Feedback:%20Welcome">Send comments on this topic.</a>

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Changes to Doc/SQLite.NET.chm.

cannot compute difference between binary files