diff options
Diffstat (limited to 'www/about.html')
-rw-r--r-- | www/about.html | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/www/about.html b/www/about.html new file mode 100644 index 0000000..f395798 --- /dev/null +++ b/www/about.html @@ -0,0 +1,228 @@ +<!DOCTYPE html> +<html><head> +<meta name="viewport" content="width=device-width, initial-scale=1.0"> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<link href="sqlite.css" rel="stylesheet"> +<title>About SQLite</title> +<!-- path= --> +</head> +<body> +<div class=nosearch> +<a href="index.html"> +<img class="logo" src="images/sqlite370_banner.gif" alt="SQLite" border="0"> +</a> +<div><!-- IE hack to prevent disappearing logo --></div> +<div class="tagline desktoponly"> +Small. Fast. Reliable.<br>Choose any three. +</div> +<div class="menu mainmenu"> +<ul> +<li><a href="index.html">Home</a> +<li class='mobileonly'><a href="javascript:void(0)" onclick='toggle_div("submenu")'>Menu</a> +<li class='wideonly'><a href='about.html'>About</a> +<li class='desktoponly'><a href="docs.html">Documentation</a> +<li class='desktoponly'><a href="download.html">Download</a> +<li class='wideonly'><a href='copyright.html'>License</a> +<li class='desktoponly'><a href="support.html">Support</a> +<li class='desktoponly'><a href="prosupport.html">Purchase</a> +<li class='search' id='search_menubutton'> +<a href="javascript:void(0)" onclick='toggle_search()'>Search</a> +</ul> +</div> +<div class="menu submenu" id="submenu"> +<ul> +<li><a href='about.html'>About</a> +<li><a href='docs.html'>Documentation</a> +<li><a href='download.html'>Download</a> +<li><a href='support.html'>Support</a> +<li><a href='prosupport.html'>Purchase</a> +</ul> +</div> +<div class="searchmenu" id="searchmenu"> +<form method="GET" action="search"> +<select name="s" id="searchtype"> +<option value="d">Search Documentation</option> +<option value="c">Search Changelog</option> +</select> +<input type="text" name="q" id="searchbox" value=""> +<input type="submit" value="Go"> +</form> +</div> +</div> +<script> +function toggle_div(nm) { +var w = document.getElementById(nm); +if( w.style.display=="block" ){ +w.style.display = "none"; +}else{ +w.style.display = "block"; +} +} +function toggle_search() { +var w = document.getElementById("searchmenu"); +if( w.style.display=="block" ){ +w.style.display = "none"; +} else { +w.style.display = "block"; +setTimeout(function(){ +document.getElementById("searchbox").focus() +}, 30); +} +} +function div_off(nm){document.getElementById(nm).style.display="none";} +window.onbeforeunload = function(e){div_off("submenu");} +/* Disable the Search feature if we are not operating from CGI, since */ +/* Search is accomplished using CGI and will not work without it. */ +if( !location.origin || !location.origin.match || !location.origin.match(/http/) ){ +document.getElementById("search_menubutton").style.display = "none"; +} +/* Used by the Hide/Show button beside syntax diagrams, to toggle the */ +function hideorshow(btn,obj){ +var x = document.getElementById(obj); +var b = document.getElementById(btn); +if( x.style.display!='none' ){ +x.style.display = 'none'; +b.innerHTML='show'; +}else{ +x.style.display = ''; +b.innerHTML='hide'; +} +return false; +} +var antiRobot = 0; +function antiRobotGo(){ +if( antiRobot!=3 ) return; +antiRobot = 7; +var j = document.getElementById("mtimelink"); +if(j && j.hasAttribute("data-href")) j.href=j.getAttribute("data-href"); +} +function antiRobotDefense(){ +document.body.onmousedown=function(){ +antiRobot |= 2; +antiRobotGo(); +document.body.onmousedown=null; +} +document.body.onmousemove=function(){ +antiRobot |= 2; +antiRobotGo(); +document.body.onmousemove=null; +} +setTimeout(function(){ +antiRobot |= 1; +antiRobotGo(); +}, 100) +antiRobotGo(); +} +antiRobotDefense(); +</script> + + +<h1 align=center>About SQLite</h1> + +<div class="rightsidebar border2px"> +<h4 align="center">Executive Summary</h4> +<ul> +<li> <a href="fullsql.html">Full-featured SQL</a> +<li> <a href='mostdeployed.html'>Billions and billions of deployments</a> +<li> <a href='onefile.html'>Single-file database</a> +<li> <a href='copyright.html'>Public domain source code</a> +<li> All source code in one file (<a href='amalgamation.html'>sqlite3.c</a>) +<li> <a href='footprint.html'>Small footprint</a> +<li> Max DB size: <a href='limits.html'>281 terabytes</a> + (2<sup><small>48</small></sup> bytes) +<li> Max row size: <a href='limits.html'>1 gigabyte</a> +<li> <a href='fasterthanfs.html'>Faster than direct file I/O</a> +<li> <a href='testing.html'>Aviation-grade quality and testing</a> +<li> <a href='zeroconf.html'>Zero-configuration</a> +<li> <a href='transactional.html'>ACID transactions, even after power loss</a> +<li> <a href='fileformat.html'>Stable, enduring file format</a> +<li> <a href='doclist.html'>Extensive, detailed documentation</a> +<li> <a href='lts.html'>Long-term support</a> +</div> + +<p>SQLite is an in-process library that implements a +<a href="selfcontained.html">self-contained</a>, +<a href="serverless.html">serverless</a>, +<a href="zeroconf.html">zero-configuration</a>, +<a href="transactional.html">transactional</a> +SQL database engine. +The code for SQLite is in the +<a href="copyright.html">public domain</a> and is thus free for +use for any purpose, commercial or private. +SQLite is the <a href="mostdeployed.html">most widely deployed</a> database in the world +with more applications than we can +count, including several <a href="famous.html">high-profile projects.</a></p> + +<p>SQLite is an embedded SQL database engine. +Unlike most other SQL databases, SQLite does not have a separate +server process. SQLite reads and writes directly to ordinary disk +files. A complete SQL database with multiple tables, indices, +triggers, and views, is contained in a single disk file. +The database <a href="fileformat2.html">file format</a> is cross-platform - you can freely copy a database +between 32-bit and 64-bit systems or between +<a href="http://en.wikipedia.org/wiki/Endianness">big-endian</a> and +<a href="http://en.wikipedia.org/wiki/Endianness">little-endian</a> +architectures. These features make SQLite a popular choice as +an <a href="appfileformat.html">Application File Format</a>. SQLite database files are a +<a href="locrsf.html">recommended storage format</a> by the US Library of Congress. +Think of SQLite not as a replacement for +<a href="http://www.oracle.com/database/index.html">Oracle</a> but +as a replacement for <a href="http://man.he.net/man3/fopen">fopen()</a></p> + +<p>SQLite is a compact library. +With all features enabled, the <a href="footprint.html">library size</a> can be less than 750KiB, +depending on the target platform and compiler optimization settings. +(64-bit code is larger. And some compiler optimizations +such as aggressive function inlining and loop unrolling can cause the +object code to be much larger.) +There is a tradeoff between memory usage and speed. +SQLite generally runs faster the more memory +you give it. Nevertheless, performance is usually quite good even +in low-memory environments. Depending on how it is used, SQLite can be +<a href="fasterthanfs.html">faster than direct filesystem I/O</a>.</p> + +<p>SQLite is +<a href="testing.html">very carefully tested</a> prior to every +release and has a reputation for being very reliable. +Most of the SQLite source code is devoted purely to testing and +verification. An automated test suite runs millions and millions of +test cases involving hundreds of millions of individual SQL statements +and achieves <a href="testing.html#coverage">100% branch test coverage</a>. +SQLite responds gracefully to memory +allocation failures and disk I/O errors. Transactions are +<a href="http://en.wikipedia.org/wiki/ACID">ACID</a> +even if interrupted by system crashes or power failures. +All of this is verified by +the automated tests using special test harnesses which simulate +system failures. +Of course, even with all this testing, there are still bugs. +But unlike some similar projects (especially commercial competitors) +SQLite is open and honest about all bugs and provides +<a href="https://www.sqlite.org/src/rptview?rn=1">bugs lists</a> and +minute-by-minute <a href="https://www.sqlite.org/src/timeline"> +chronologies</a> of code changes.</p> + +<p>The SQLite code base is supported by an +<a href="crew.html">international team</a> of developers who work on +SQLite full-time. +The developers continue to expand the capabilities of SQLite +and enhance its reliability and performance while maintaining +backwards compatibility with the +<a href="c3ref/intro.html">published interface spec</a>, +<a href="lang.html">SQL syntax</a>, and database <a href="fileformat2.html">file format</a>. +The source code is absolutely free to anybody who wants it, +but <a href="prosupport.html">professional support</a> is also available.</p> + +<p>The SQLite project was started on +<a href="https://www.sqlite.org/src/timeline?c=2000-05-29+14:26:00">2000-05-09</a>. +The future is always hard to predict, but the intent of the developers +is to support SQLite through the year 2050. Design decisions are made +with that objective in mind.</p> + +<p>We the developers hope that you find SQLite useful and we +entreat you to use it well: to make good and beautiful products that +are fast, reliable, and simple to use. Seek forgiveness for yourself +as you forgive others. And just as you have received SQLite for free, +so also freely give, paying the debt forward.</p> + + |