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diff --git a/doc/src/sgml/html/applevel-consistency.html b/doc/src/sgml/html/applevel-consistency.html index 6c71c80..9ffcf2f 100644 --- a/doc/src/sgml/html/applevel-consistency.html +++ b/doc/src/sgml/html/applevel-consistency.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>13.4. Data Consistency Checks at the Application Level</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="explicit-locking.html" title="13.3. Explicit Locking" /><link rel="next" href="mvcc-serialization-failure-handling.html" title="13.5. Serialization Failure Handling" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">13.4. Data Consistency Checks at the Application Level</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="explicit-locking.html" title="13.3. Explicit Locking">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="mvcc.html" title="Chapter 13. Concurrency Control">Up</a></td><th width="60%" align="center">Chapter 13. Concurrency Control</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="mvcc-serialization-failure-handling.html" title="13.5. Serialization Failure Handling">Next</a></td></tr></table><hr /></div><div class="sect1" id="APPLEVEL-CONSISTENCY"><div class="titlepage"><div><div><h2 class="title" style="clear: both">13.4. Data Consistency Checks at the Application Level <a href="#APPLEVEL-CONSISTENCY" class="id_link">#</a></h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="applevel-consistency.html#SERIALIZABLE-CONSISTENCY">13.4.1. Enforcing Consistency with Serializable Transactions</a></span></dt><dt><span class="sect2"><a href="applevel-consistency.html#NON-SERIALIZABLE-CONSISTENCY">13.4.2. Enforcing Consistency with Explicit Blocking Locks</a></span></dt></dl></div><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>13.4. Data Consistency Checks at the Application Level</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="explicit-locking.html" title="13.3. Explicit Locking" /><link rel="next" href="mvcc-serialization-failure-handling.html" title="13.5. Serialization Failure Handling" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">13.4. Data Consistency Checks at the Application Level</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="explicit-locking.html" title="13.3. Explicit Locking">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="mvcc.html" title="Chapter 13. Concurrency Control">Up</a></td><th width="60%" align="center">Chapter 13. Concurrency Control</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 16.3 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="mvcc-serialization-failure-handling.html" title="13.5. Serialization Failure Handling">Next</a></td></tr></table><hr /></div><div class="sect1" id="APPLEVEL-CONSISTENCY"><div class="titlepage"><div><div><h2 class="title" style="clear: both">13.4. Data Consistency Checks at the Application Level <a href="#APPLEVEL-CONSISTENCY" class="id_link">#</a></h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="applevel-consistency.html#SERIALIZABLE-CONSISTENCY">13.4.1. Enforcing Consistency with Serializable Transactions</a></span></dt><dt><span class="sect2"><a href="applevel-consistency.html#NON-SERIALIZABLE-CONSISTENCY">13.4.2. Enforcing Consistency with Explicit Blocking Locks</a></span></dt></dl></div><p> It is very difficult to enforce business rules regarding data integrity using Read Committed transactions because the view of the data is shifting with each statement, and even a single statement may not @@ -112,4 +112,4 @@ <code class="literal">UPDATE</code>, <code class="literal">DELETE</code>, or <code class="literal">MERGE</code>), so it is possible to obtain locks explicitly before the snapshot is frozen. - </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="explicit-locking.html" title="13.3. Explicit Locking">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="mvcc.html" title="Chapter 13. Concurrency Control">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="mvcc-serialization-failure-handling.html" title="13.5. Serialization Failure Handling">Next</a></td></tr><tr><td width="40%" align="left" valign="top">13.3. Explicit Locking </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 13.5. Serialization Failure Handling</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="explicit-locking.html" title="13.3. Explicit Locking">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="mvcc.html" title="Chapter 13. Concurrency Control">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="mvcc-serialization-failure-handling.html" title="13.5. Serialization Failure Handling">Next</a></td></tr><tr><td width="40%" align="left" valign="top">13.3. Explicit Locking </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.3 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 13.5. Serialization Failure Handling</td></tr></table></div></body></html>
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