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<!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>Appendix L. Acronyms</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="limits.html" title="Appendix K. PostgreSQL Limits" /><link rel="next" href="glossary.html" title="Appendix M. Glossary" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">Appendix L. Acronyms</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="limits.html" title="Appendix K. PostgreSQL Limits">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="appendixes.html" title="Part VIII. Appendixes">Up</a></td><th width="60%" align="center">Part VIII. Appendixes</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="glossary.html" title="Appendix M. Glossary">Next</a></td></tr></table><hr /></div><div class="appendix" id="ACRONYMS"><div class="titlepage"><div><div><h2 class="title">Appendix L. Acronyms</h2></div></div></div><p>
This is a list of acronyms commonly used in the <span class="productname">PostgreSQL</span>
documentation and in discussions about <span class="productname">PostgreSQL</span>.
</p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><acronym class="acronym">ANSI</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/American_National_Standards_Institute" target="_top">
American National Standards Institute</a>
</p></dd><dt><span class="term"><acronym class="acronym">API</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/API" target="_top">Application Programming Interface</a>
</p></dd><dt><span class="term"><acronym class="acronym">ASCII</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Ascii" target="_top">American Standard
Code for Information Interchange</a>
</p></dd><dt><span class="term"><acronym class="acronym">BKI</acronym></span></dt><dd><p>
<a class="link" href="bki.html" title="Chapter 75. System Catalog Declarations and Initial Contents">Backend Interface</a>
</p></dd><dt><span class="term"><acronym class="acronym">CA</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Certificate_authority" target="_top">Certificate Authority</a>
</p></dd><dt><span class="term"><acronym class="acronym">CIDR</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing" target="_top">Classless
Inter-Domain Routing</a>
</p></dd><dt><span class="term"><acronym class="acronym">CPAN</acronym></span></dt><dd><p>
<a class="ulink" href="https://www.cpan.org/" target="_top">Comprehensive Perl Archive Network</a>
</p></dd><dt><span class="term"><acronym class="acronym">CRL</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Certificate_revocation_list" target="_top">Certificate
Revocation List</a>
</p></dd><dt><span class="term"><acronym class="acronym">CSV</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Comma-separated_values" target="_top">Comma
Separated Values</a>
</p></dd><dt><span class="term"><acronym class="acronym">CTE</acronym></span></dt><dd><p>
<a class="link" href="queries-with.html" title="7.8. WITH Queries (Common Table Expressions)">Common Table Expression</a>
</p></dd><dt><span class="term"><acronym class="acronym">CVE</acronym></span></dt><dd><p>
<a class="ulink" href="https://cve.mitre.org/" target="_top">Common Vulnerabilities and Exposures</a>
</p></dd><dt><span class="term"><acronym class="acronym">DBA</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Database_administrator" target="_top">Database
Administrator</a>
</p></dd><dt><span class="term"><acronym class="acronym">DBI</acronym></span></dt><dd><p>
<a class="ulink" href="https://dbi.perl.org/" target="_top">Database Interface (Perl)</a>
</p></dd><dt><span class="term"><acronym class="acronym">DBMS</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Dbms" target="_top">Database Management
System</a>
</p></dd><dt><span class="term"><acronym class="acronym">DDL</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Data_Definition_Language" target="_top">Data
Definition Language</a>, SQL commands such as <code class="command">CREATE
TABLE</code>, <code class="command">ALTER USER</code>
</p></dd><dt><span class="term"><acronym class="acronym">DML</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Data_Manipulation_Language" target="_top">Data
Manipulation Language</a>, SQL commands such as <code class="command">INSERT</code>,
<code class="command">UPDATE</code>, <code class="command">DELETE</code>
</p></dd><dt><span class="term"><acronym class="acronym">DST</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Daylight_saving_time" target="_top">Daylight
Saving Time</a>
</p></dd><dt><span class="term"><acronym class="acronym">ECPG</acronym></span></dt><dd><p>
<a class="link" href="ecpg.html" title="Chapter 36. ECPG — Embedded SQL in C">Embedded C for PostgreSQL</a>
</p></dd><dt><span class="term"><acronym class="acronym">ESQL</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Embedded_SQL" target="_top">Embedded
SQL</a>
</p></dd><dt><span class="term"><acronym class="acronym">FAQ</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/FAQ" target="_top">Frequently Asked
Questions</a>
</p></dd><dt><span class="term"><acronym class="acronym">FSM</acronym></span></dt><dd><p>
<a class="link" href="storage-fsm.html" title="73.3. Free Space Map">Free Space Map</a>
</p></dd><dt><span class="term"><acronym class="acronym">GEQO</acronym></span></dt><dd><p>
<a class="link" href="geqo.html" title="Chapter 62. Genetic Query Optimizer">Genetic Query Optimizer</a>
</p></dd><dt><span class="term"><acronym class="acronym">GIN</acronym></span></dt><dd><p>
<a class="link" href="gin.html" title="Chapter 70. GIN Indexes">Generalized Inverted Index</a>
</p></dd><dt><span class="term"><acronym class="acronym">GiST</acronym></span></dt><dd><p>
<a class="link" href="gist.html" title="Chapter 68. GiST Indexes">Generalized Search Tree</a>
</p></dd><dt><span class="term"><acronym class="acronym">Git</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Git_(software)" target="_top">Git</a>
</p></dd><dt><span class="term"><acronym class="acronym">GMT</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/GMT" target="_top">Greenwich Mean Time</a>
</p></dd><dt><span class="term"><acronym class="acronym">GSSAPI</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Generic_Security_Services_Application_Program_Interface" target="_top">Generic
Security Services Application Programming Interface</a>
</p></dd><dt><span class="term"><acronym class="acronym">GUC</acronym></span></dt><dd><p>
<a class="link" href="config-setting.html" title="20.1. Setting Parameters">Grand Unified Configuration</a>,
the <span class="productname">PostgreSQL</span> subsystem that handles server configuration
</p></dd><dt><span class="term"><acronym class="acronym">HBA</acronym></span></dt><dd><p>
<a class="link" href="auth-pg-hba-conf.html" title="21.1. The pg_hba.conf File">Host-Based Authentication</a>
</p></dd><dt><span class="term"><acronym class="acronym">HOT</acronym></span></dt><dd><p>
<a class="link" href="storage-hot.html" title="73.7. Heap-Only Tuples (HOT)">Heap-Only Tuples</a>
</p></dd><dt><span class="term"><acronym class="acronym">IEC</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/International_Electrotechnical_Commission" target="_top">International
Electrotechnical Commission</a>
</p></dd><dt><span class="term"><acronym class="acronym">IEEE</acronym></span></dt><dd><p>
<a class="ulink" href="https://standards.ieee.org/" target="_top">Institute of Electrical and
Electronics Engineers</a>
</p></dd><dt><span class="term"><acronym class="acronym">IPC</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Inter-process_communication" target="_top">Inter-Process
Communication</a>
</p></dd><dt><span class="term"><acronym class="acronym">ISO</acronym></span></dt><dd><p>
<a class="ulink" href="https://www.iso.org/home.html" target="_top">International Organization for
Standardization</a>
</p></dd><dt><span class="term"><acronym class="acronym">ISSN</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Issn" target="_top">International Standard
Serial Number</a>
</p></dd><dt><span class="term"><acronym class="acronym">JDBC</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Java_Database_Connectivity" target="_top">Java
Database Connectivity</a>
</p></dd><dt><span class="term"><acronym class="acronym">JIT</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Just-in-time_compilation" target="_top">Just-in-Time
compilation</a>
</p></dd><dt><span class="term"><acronym class="acronym">JSON</acronym></span></dt><dd><p>
<a class="ulink" href="https://www.json.org" target="_top">JavaScript Object Notation</a>
</p></dd><dt><span class="term"><acronym class="acronym">LDAP</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol" target="_top">Lightweight
Directory Access Protocol</a>
</p></dd><dt><span class="term"><acronym class="acronym">LSN</acronym></span></dt><dd><p>
<a class="glossterm" href="glossary.html#GLOSSARY-LOG-SEQUENCE-NUMBER"><em class="glossterm"><a class="glossterm" href="glossary.html#GLOSSARY-LOG-SEQUENCE-NUMBER" title="Log sequence number">Log Sequence Number</a></em></a>
</p></dd><dt><span class="term"><acronym class="acronym">MCF</acronym></span></dt><dd><p>
Most Common Frequency, that is the frequency associated with some
Most Common Value
</p></dd><dt><span class="term"><acronym class="acronym">MCV</acronym></span></dt><dd><p>
Most Common Value, one of the values appearing most often within a
particular table column
</p></dd><dt><span class="term"><acronym class="acronym">MITM</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Man-in-the-middle_attack" target="_top">
Man-in-the-middle attack</a>
</p></dd><dt><span class="term"><acronym class="acronym">MSVC</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Visual_C++" target="_top"><span class="productname">Microsoft
Visual C</span></a>
</p></dd><dt><span class="term"><acronym class="acronym">MVCC</acronym></span></dt><dd><p>
<a class="link" href="mvcc.html" title="Chapter 13. Concurrency Control">Multi-Version Concurrency Control</a>
</p></dd><dt><span class="term"><acronym class="acronym">NLS</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Internationalization_and_localization" target="_top">National
Language Support</a>
</p></dd><dt><span class="term"><acronym class="acronym">ODBC</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Open_Database_Connectivity" target="_top">Open
Database Connectivity</a>
</p></dd><dt><span class="term"><acronym class="acronym">OID</acronym></span></dt><dd><p>
<a class="link" href="datatype-oid.html" title="8.19. Object Identifier Types">Object Identifier</a>
</p></dd><dt><span class="term"><acronym class="acronym">OLAP</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Olap" target="_top">Online Analytical
Processing</a>
</p></dd><dt><span class="term"><acronym class="acronym">OLTP</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/OLTP" target="_top">Online Transaction
Processing</a>
</p></dd><dt><span class="term"><acronym class="acronym">ORDBMS</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/ORDBMS" target="_top">Object-Relational
Database Management System</a>
</p></dd><dt><span class="term"><acronym class="acronym">PAM</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Pluggable_Authentication_Modules" target="_top">Pluggable
Authentication Modules</a>
</p></dd><dt><span class="term"><acronym class="acronym">PGSQL</acronym></span></dt><dd><p>
<a class="link" href="index.html" title="PostgreSQL 16.3 Documentation"><span class="productname">PostgreSQL</span></a>
</p></dd><dt><span class="term"><acronym class="acronym">PGXS</acronym></span></dt><dd><p>
<a class="link" href="extend-pgxs.html" title="38.18. Extension Building Infrastructure"><span class="productname">PostgreSQL</span> Extension System</a>
</p></dd><dt><span class="term"><acronym class="acronym">PID</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Process_identifier" target="_top">Process Identifier</a>
</p></dd><dt><span class="term"><acronym class="acronym">PITR</acronym></span></dt><dd><p>
<a class="link" href="continuous-archiving.html" title="26.3. Continuous Archiving and Point-in-Time Recovery (PITR)">Point-In-Time
Recovery</a> (Continuous Archiving)
</p></dd><dt><span class="term"><acronym class="acronym">PL</acronym></span></dt><dd><p>
<a class="link" href="server-programming.html" title="Part V. Server Programming">Procedural Languages (server-side)</a>
</p></dd><dt><span class="term"><acronym class="acronym">POSIX</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/POSIX" target="_top">Portable Operating
System Interface</a>
</p></dd><dt><span class="term"><acronym class="acronym">RDBMS</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Relational_database_management_system" target="_top">Relational
Database Management System</a>
</p></dd><dt><span class="term"><acronym class="acronym">RFC</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Request_for_Comments" target="_top">Request For
Comments</a>
</p></dd><dt><span class="term"><acronym class="acronym">SGML</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/SGML" target="_top">Standard Generalized
Markup Language</a>
</p></dd><dt><span class="term"><acronym class="acronym">SNI</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Server_Name_Indication" target="_top">
Server Name Indication</a>,
<a class="ulink" href="https://datatracker.ietf.org/doc/html/rfc6066#section-3" target="_top">RFC 6066</a>
</p></dd><dt><span class="term"><acronym class="acronym">SPI</acronym></span></dt><dd><p>
<a class="link" href="spi.html" title="Chapter 47. Server Programming Interface">Server Programming Interface</a>
</p></dd><dt><span class="term"><acronym class="acronym">SP-GiST</acronym></span></dt><dd><p>
<a class="link" href="spgist.html" title="Chapter 69. SP-GiST Indexes">Space-Partitioned Generalized Search Tree</a>
</p></dd><dt><span class="term"><acronym class="acronym">SQL</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/SQL" target="_top">Structured Query Language</a>
</p></dd><dt><span class="term"><acronym class="acronym">SRF</acronym></span></dt><dd><p>
<a class="link" href="xfunc-c.html#XFUNC-C-RETURN-SET" title="38.10.8. Returning Sets">Set-Returning Function</a>
</p></dd><dt><span class="term"><acronym class="acronym">SSH</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Secure_Shell" target="_top">Secure
Shell</a>
</p></dd><dt><span class="term"><acronym class="acronym">SSL</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Secure_Sockets_Layer" target="_top">Secure Sockets Layer</a>
</p></dd><dt><span class="term"><acronym class="acronym">SSPI</acronym></span></dt><dd><p>
<a class="ulink" href="https://msdn.microsoft.com/en-us/library/aa380493%28VS.85%29.aspx" target="_top">Security
Support Provider Interface</a>
</p></dd><dt><span class="term"><acronym class="acronym">SYSV</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/System_V" target="_top">Unix System V</a>
</p></dd><dt><span class="term"><acronym class="acronym">TCP/IP</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Transmission_Control_Protocol" target="_top">Transmission
Control Protocol (TCP) / Internet Protocol (IP)</a>
</p></dd><dt><span class="term"><acronym class="acronym">TID</acronym></span></dt><dd><p>
<a class="link" href="datatype-oid.html" title="8.19. Object Identifier Types">Tuple Identifier</a>
</p></dd><dt><span class="term"><acronym class="acronym">TLS</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Transport_Layer_Security" target="_top">
Transport Layer Security</a>
</p></dd><dt><span class="term"><acronym class="acronym">TOAST</acronym></span></dt><dd><p>
<a class="link" href="storage-toast.html" title="73.2. TOAST">The Oversized-Attribute Storage Technique</a>
</p></dd><dt><span class="term"><acronym class="acronym">TPC</acronym></span></dt><dd><p>
<a class="ulink" href="http://www.tpc.org/" target="_top">Transaction Processing
Performance Council</a>
</p></dd><dt><span class="term"><acronym class="acronym">URL</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/URL" target="_top">Uniform Resource
Locator</a>
</p></dd><dt><span class="term"><acronym class="acronym">UTC</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time" target="_top">Coordinated
Universal Time</a>
</p></dd><dt><span class="term"><acronym class="acronym">UTF</acronym></span></dt><dd><p>
<a class="ulink" href="https://www.unicode.org/" target="_top">Unicode Transformation
Format</a>
</p></dd><dt><span class="term"><acronym class="acronym">UTF8</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/Utf8" target="_top">Eight-Bit Unicode
Transformation Format</a>
</p></dd><dt><span class="term"><acronym class="acronym">UUID</acronym></span></dt><dd><p>
<a class="link" href="datatype-uuid.html" title="8.12. UUID Type">Universally Unique Identifier</a>
</p></dd><dt><span class="term"><acronym class="acronym">WAL</acronym></span></dt><dd><p>
<a class="link" href="wal.html" title="Chapter 30. Reliability and the Write-Ahead Log">Write-Ahead Log</a>
</p></dd><dt><span class="term"><acronym class="acronym">XID</acronym></span></dt><dd><p>
<a class="link" href="datatype-oid.html" title="8.19. Object Identifier Types">Transaction Identifier</a>
</p></dd><dt><span class="term"><acronym class="acronym">XML</acronym></span></dt><dd><p>
<a class="ulink" href="https://en.wikipedia.org/wiki/XML" target="_top">Extensible Markup
Language</a>
</p></dd></dl></div><p>
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="limits.html" title="Appendix K. PostgreSQL Limits">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendixes.html" title="Part VIII. Appendixes">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="glossary.html" title="Appendix M. Glossary">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix K. <span class="productname">PostgreSQL</span> Limits </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"> Appendix M. Glossary</td></tr></table></div></body></html>