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diff --git a/doc/src/sgml/html/ddl-constraints.html b/doc/src/sgml/html/ddl-constraints.html index 80315b2..3a6e23a 100644 --- a/doc/src/sgml/html/ddl-constraints.html +++ b/doc/src/sgml/html/ddl-constraints.html @@ -1,5 +1,5 @@ <?xml version="1.0" encoding="UTF-8" standalone="no"?> -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>5.4. Constraints</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="ddl-generated-columns.html" title="5.3. Generated Columns" /><link rel="next" href="ddl-system-columns.html" title="5.5. System Columns" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">5.4. Constraints</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="ddl-generated-columns.html" title="5.3. Generated Columns">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="ddl.html" title="Chapter 5. Data Definition">Up</a></td><th width="60%" align="center">Chapter 5. Data Definition</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.6 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="ddl-system-columns.html" title="5.5. System Columns">Next</a></td></tr></table><hr /></div><div class="sect1" id="DDL-CONSTRAINTS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">5.4. Constraints</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-CHECK-CONSTRAINTS">5.4.1. Check Constraints</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#id-1.5.4.6.6">5.4.2. Not-Null Constraints</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-UNIQUE-CONSTRAINTS">5.4.3. Unique Constraints</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-PRIMARY-KEYS">5.4.4. Primary Keys</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-FK">5.4.5. Foreign Keys</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-EXCLUSION">5.4.6. Exclusion Constraints</a></span></dt></dl></div><a id="id-1.5.4.6.2" class="indexterm"></a><p> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>5.4. Constraints</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="ddl-generated-columns.html" title="5.3. Generated Columns" /><link rel="next" href="ddl-system-columns.html" title="5.5. System Columns" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">5.4. Constraints</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="ddl-generated-columns.html" title="5.3. Generated Columns">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="ddl.html" title="Chapter 5. Data Definition">Up</a></td><th width="60%" align="center">Chapter 5. Data Definition</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.7 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="ddl-system-columns.html" title="5.5. System Columns">Next</a></td></tr></table><hr /></div><div class="sect1" id="DDL-CONSTRAINTS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">5.4. Constraints</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-CHECK-CONSTRAINTS">5.4.1. Check Constraints</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#id-1.5.4.6.6">5.4.2. Not-Null Constraints</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-UNIQUE-CONSTRAINTS">5.4.3. Unique Constraints</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-PRIMARY-KEYS">5.4.4. Primary Keys</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-FK">5.4.5. Foreign Keys</a></span></dt><dt><span class="sect2"><a href="ddl-constraints.html#DDL-CONSTRAINTS-EXCLUSION">5.4.6. Exclusion Constraints</a></span></dt></dl></div><a id="id-1.5.4.6.2" class="indexterm"></a><p> Data types are a way to limit the kind of data that can be stored in a table. For many applications, however, the constraint they provide is too coarse. For example, a column containing a product @@ -604,4 +604,4 @@ CREATE TABLE circles ( </p><p> Adding an exclusion constraint will automatically create an index of the type specified in the constraint declaration. - </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ddl-generated-columns.html" title="5.3. Generated Columns">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ddl.html" title="Chapter 5. Data Definition">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ddl-system-columns.html" title="5.5. System Columns">Next</a></td></tr><tr><td width="40%" align="left" valign="top">5.3. Generated Columns </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.6 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 5.5. System Columns</td></tr></table></div></body></html>
\ No newline at end of file + </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ddl-generated-columns.html" title="5.3. Generated Columns">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ddl.html" title="Chapter 5. Data Definition">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ddl-system-columns.html" title="5.5. System Columns">Next</a></td></tr><tr><td width="40%" align="left" valign="top">5.3. Generated Columns </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.7 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 5.5. System Columns</td></tr></table></div></body></html>
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