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   3   This is a list of acronyms commonly used in the <span class="productname">PostgreSQL</span>
   4   documentation and in discussions about <span class="productname">PostgreSQL</span>.
   5
   6   </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><acronym class="acronym">AIO</acronym></span></dt><dd><p>
   7       <a class="link" href="glossary.html#GLOSSARY-AIO" title="Asynchronous I/O">Asynchronous <acronym class="acronym">I/O</acronym></a>
   8      </p></dd><dt><span class="term"><acronym class="acronym">ACL</acronym></span></dt><dd><p>
   9       <a class="ulink" href="https://en.wikipedia.org/wiki/Access-control_list" target="_top">Access Control List</a>
  10      </p></dd><dt><span class="term"><acronym class="acronym">AM</acronym></span></dt><dd><p>
  11       <a class="link" href="glossary.html#GLOSSARY-AM" title="Access Method">Access Method</a>
  12      </p></dd><dt><span class="term"><acronym class="acronym">ANSI</acronym></span></dt><dd><p>
  13       <a class="ulink" href="https://en.wikipedia.org/wiki/American_National_Standards_Institute" target="_top">
  14       American National Standards Institute</a>
  15      </p></dd><dt><span class="term"><acronym class="acronym">API</acronym></span></dt><dd><p>
  16       <a class="ulink" href="https://en.wikipedia.org/wiki/API" target="_top">Application Programming Interface</a>
  17      </p></dd><dt><span class="term"><acronym class="acronym">ASCII</acronym></span></dt><dd><p>
  18       <a class="ulink" href="https://en.wikipedia.org/wiki/ASCII" target="_top">American Standard
  19       Code for Information Interchange</a>
  20      </p></dd><dt><span class="term"><acronym class="acronym">BKI</acronym></span></dt><dd><p>
  21       <a class="link" href="bki.html" title="Chapter 68. System Catalog Declarations and Initial Contents">Backend Interface</a>
  22      </p></dd><dt><span class="term"><acronym class="acronym">CA</acronym></span></dt><dd><p>
  23       <a class="ulink" href="https://en.wikipedia.org/wiki/Certificate_authority" target="_top">Certificate Authority</a>
  24      </p></dd><dt><span class="term"><acronym class="acronym">CIDR</acronym></span></dt><dd><p>
  25       <a class="ulink" href="https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing" target="_top">Classless
  26       Inter-Domain Routing</a>
  27      </p></dd><dt><span class="term"><acronym class="acronym">CPAN</acronym></span></dt><dd><p>
  28       <a class="ulink" href="https://www.cpan.org/" target="_top">Comprehensive Perl Archive Network</a>
  29      </p></dd><dt><span class="term"><acronym class="acronym">CRL</acronym></span></dt><dd><p>
  30       <a class="ulink" href="https://en.wikipedia.org/wiki/Certificate_revocation_list" target="_top">Certificate
  31       Revocation List</a>
  32      </p></dd><dt><span class="term"><acronym class="acronym">CSV</acronym></span></dt><dd><p>
  33       <a class="ulink" href="https://en.wikipedia.org/wiki/Comma-separated_values" target="_top">Comma
  34       Separated Values</a>
  35      </p></dd><dt><span class="term"><acronym class="acronym">CTE</acronym></span></dt><dd><p>
  36       <a class="link" href="queries-with.html" title="7.8. WITH Queries (Common Table Expressions)">Common Table Expression</a>
  37      </p></dd><dt><span class="term"><acronym class="acronym">CVE</acronym></span></dt><dd><p>
  38       <a class="ulink" href="https://cve.mitre.org/" target="_top">Common Vulnerabilities and Exposures</a>
  39      </p></dd><dt><span class="term"><acronym class="acronym">DBA</acronym></span></dt><dd><p>
  40       <a class="ulink" href="https://en.wikipedia.org/wiki/Database_administrator" target="_top">Database
  41       Administrator</a>
  42      </p></dd><dt><span class="term"><acronym class="acronym">DBI</acronym></span></dt><dd><p>
  43       <a class="ulink" href="https://dbi.perl.org/" target="_top">Database Interface (Perl)</a>
  44      </p></dd><dt><span class="term"><acronym class="acronym">DBMS</acronym></span></dt><dd><p>
  45       <a class="ulink" href="https://en.wikipedia.org/wiki/Database#Database_management_system" target="_top">Database Management
  46       System</a>
  47      </p></dd><dt><span class="term"><acronym class="acronym">DDL</acronym></span></dt><dd><p>
  48       <a class="ulink" href="https://en.wikipedia.org/wiki/Data_definition_language" target="_top">Data
  49       Definition Language</a>, SQL commands such as <code class="command">CREATE
  50       TABLE</code>, <code class="command">ALTER USER</code>
  51      </p></dd><dt><span class="term"><acronym class="acronym">DML</acronym></span></dt><dd><p>
  52       <a class="ulink" href="https://en.wikipedia.org/wiki/Data_manipulation_language" target="_top">Data
  53       Manipulation Language</a>, SQL commands such as <code class="command">INSERT</code>,
  54       <code class="command">UPDATE</code>, <code class="command">DELETE</code>
  55      </p></dd><dt><span class="term"><acronym class="acronym">DST</acronym></span></dt><dd><p>
  56       <a class="ulink" href="https://en.wikipedia.org/wiki/Daylight_saving_time" target="_top">Daylight
  57       Saving Time</a>
  58      </p></dd><dt><span class="term"><acronym class="acronym">ECPG</acronym></span></dt><dd><p>
  59       <a class="link" href="ecpg.html" title="Chapter 34. ECPG — Embedded SQL in C">Embedded C for PostgreSQL</a>
  60      </p></dd><dt><span class="term"><acronym class="acronym">ESQL</acronym></span></dt><dd><p>
  61       <a class="ulink" href="https://en.wikipedia.org/wiki/Embedded_SQL" target="_top">Embedded
  62       SQL</a>
  63      </p></dd><dt><span class="term"><acronym class="acronym">FAQ</acronym></span></dt><dd><p>
  64       <a class="ulink" href="https://en.wikipedia.org/wiki/FAQ" target="_top">Frequently Asked
  65       Questions</a>
  66      </p></dd><dt><span class="term"><acronym class="acronym">FSM</acronym></span></dt><dd><p>
  67       <a class="link" href="storage-fsm.html" title="66.3. Free Space Map">Free Space Map</a>
  68      </p></dd><dt><span class="term"><acronym class="acronym">GEQO</acronym></span></dt><dd><p>
  69       <a class="link" href="geqo.html" title="Chapter 61. Genetic Query Optimizer">Genetic Query Optimizer</a>
  70      </p></dd><dt><span class="term"><acronym class="acronym">GIN</acronym></span></dt><dd><p>
  71       <a class="link" href="gin.html" title="65.4. GIN Indexes">Generalized Inverted Index</a>
  72      </p></dd><dt><span class="term"><acronym class="acronym">GiST</acronym></span></dt><dd><p>
  73       <a class="link" href="gist.html" title="65.2. GiST Indexes">Generalized Search Tree</a>
  74      </p></dd><dt><span class="term"><acronym class="acronym">Git</acronym></span></dt><dd><p>
  75       <a class="ulink" href="https://en.wikipedia.org/wiki/Git" target="_top">Git</a>
  76      </p></dd><dt><span class="term"><acronym class="acronym">GMT</acronym></span></dt><dd><p>
  77       <a class="ulink" href="https://en.wikipedia.org/wiki/Greenwich_Mean_Time" target="_top">Greenwich Mean Time</a>
  78      </p></dd><dt><span class="term"><acronym class="acronym">GSSAPI</acronym></span></dt><dd><p>
  79       <a class="ulink" href="https://en.wikipedia.org/wiki/Generic_Security_Services_Application_Program_Interface" target="_top">Generic
  80       Security Services Application Programming Interface</a>
  81      </p></dd><dt><span class="term"><acronym class="acronym">GUC</acronym></span></dt><dd><p>
  82       <a class="link" href="config-setting.html" title="19.1. Setting Parameters">Grand Unified Configuration</a>,
  83       the <span class="productname">PostgreSQL</span> subsystem that handles server configuration
  84      </p></dd><dt><span class="term"><acronym class="acronym">HBA</acronym></span></dt><dd><p>
  85       <a class="link" href="auth-pg-hba-conf.html" title="20.1. The pg_hba.conf File">Host-Based Authentication</a>
  86      </p></dd><dt><span class="term"><acronym class="acronym">HOT</acronym></span></dt><dd><p>
  87       <a class="link" href="storage-hot.html" title="66.7. Heap-Only Tuples (HOT)">Heap-Only Tuples</a>
  88      </p></dd><dt><span class="term"><acronym class="acronym">IEC</acronym></span></dt><dd><p>
  89       <a class="ulink" href="https://en.wikipedia.org/wiki/International_Electrotechnical_Commission" target="_top">International
  90       Electrotechnical Commission</a>
  91      </p></dd><dt><span class="term"><acronym class="acronym">IEEE</acronym></span></dt><dd><p>
  92       <a class="ulink" href="https://standards.ieee.org/" target="_top">Institute of Electrical and
  93       Electronics Engineers</a>
  94      </p></dd><dt><span class="term"><acronym class="acronym">IPC</acronym></span></dt><dd><p>
  95       <a class="ulink" href="https://en.wikipedia.org/wiki/Inter-process_communication" target="_top">Inter-Process
  96       Communication</a>
  97      </p></dd><dt><span class="term"><acronym class="acronym">I/O</acronym></span></dt><dd><p>
  98       <a class="link" href="glossary.html#GLOSSARY-IO" title="Input/Output">Input/Output</a>
  99      </p></dd><dt><span class="term"><acronym class="acronym">ISO</acronym></span></dt><dd><p>
 100       <a class="ulink" href="https://www.iso.org/home.html" target="_top">International Organization for
 101       Standardization</a>
 102      </p></dd><dt><span class="term"><acronym class="acronym">ISSN</acronym></span></dt><dd><p>
 103       <a class="ulink" href="https://en.wikipedia.org/wiki/ISSN" target="_top">International Standard
 104       Serial Number</a>
 105      </p></dd><dt><span class="term"><acronym class="acronym">JDBC</acronym></span></dt><dd><p>
 106       <a class="ulink" href="https://en.wikipedia.org/wiki/Java_Database_Connectivity" target="_top">Java
 107       Database Connectivity</a>
 108      </p></dd><dt><span class="term"><acronym class="acronym">JIT</acronym></span></dt><dd><p>
 109       <a class="ulink" href="https://en.wikipedia.org/wiki/Just-in-time_compilation" target="_top">Just-in-Time
 110       compilation</a>
 111      </p></dd><dt><span class="term"><acronym class="acronym">JSON</acronym></span></dt><dd><p>
 112       <a class="ulink" href="https://www.json.org" target="_top">JavaScript Object Notation</a>
 113      </p></dd><dt><span class="term"><acronym class="acronym">LDAP</acronym></span></dt><dd><p>
 114       <a class="ulink" href="https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol" target="_top">Lightweight
 115       Directory Access Protocol</a>
 116      </p></dd><dt><span class="term"><acronym class="acronym">LSN</acronym></span></dt><dd><p>
 117       <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>
 118      </p></dd><dt><span class="term"><acronym class="acronym">MCF</acronym></span></dt><dd><p>
 119       Most Common Frequency, that is the frequency associated with some
 120       Most Common Value
 121      </p></dd><dt><span class="term"><acronym class="acronym">MCV</acronym></span></dt><dd><p>
 122       Most Common Value, one of the values appearing most often within a
 123       particular table column
 124      </p></dd><dt><span class="term"><acronym class="acronym">MITM</acronym></span></dt><dd><p>
 125       <a class="ulink" href="https://en.wikipedia.org/wiki/Man-in-the-middle_attack" target="_top">
 126       Man-in-the-middle attack</a>
 127      </p></dd><dt><span class="term"><acronym class="acronym">MSVC</acronym></span></dt><dd><p>
 128       <a class="ulink" href="https://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B" target="_top"><span class="productname">Microsoft
 129       Visual C</span></a>
 130      </p></dd><dt><span class="term"><acronym class="acronym">MVCC</acronym></span></dt><dd><p>
 131       <a class="link" href="mvcc.html" title="Chapter 13. Concurrency Control">Multi-Version Concurrency Control</a>
 132      </p></dd><dt><span class="term"><acronym class="acronym">NLS</acronym></span></dt><dd><p>
 133       <a class="ulink" href="https://en.wikipedia.org/wiki/Internationalization_and_localization" target="_top">National
 134       Language Support</a>
 135      </p></dd><dt><span class="term"><acronym class="acronym">ODBC</acronym></span></dt><dd><p>
 136       <a class="ulink" href="https://en.wikipedia.org/wiki/Open_Database_Connectivity" target="_top">Open
 137       Database Connectivity</a>
 138      </p></dd><dt><span class="term"><acronym class="acronym">OID</acronym></span></dt><dd><p>
 139       <a class="link" href="datatype-oid.html" title="8.19. Object Identifier Types">Object Identifier</a>
 140      </p></dd><dt><span class="term"><acronym class="acronym">OLAP</acronym></span></dt><dd><p>
 141       <a class="ulink" href="https://en.wikipedia.org/wiki/Online_analytical_processing" target="_top">Online Analytical
 142       Processing</a>
 143      </p></dd><dt><span class="term"><acronym class="acronym">OLTP</acronym></span></dt><dd><p>
 144       <a class="ulink" href="https://en.wikipedia.org/wiki/Online_transaction_processing" target="_top">Online Transaction
 145       Processing</a>
 146      </p></dd><dt><span class="term"><acronym class="acronym">ORDBMS</acronym></span></dt><dd><p>
 147       <a class="ulink" href="https://en.wikipedia.org/wiki/Object%E2%80%93relational_database" target="_top">Object-Relational
 148       Database Management System</a>
 149      </p></dd><dt><span class="term"><acronym class="acronym">PAM</acronym></span></dt><dd><p>
 150       <a class="ulink" href="https://en.wikipedia.org/wiki/Pluggable_authentication_module" target="_top">Pluggable
 151       Authentication Modules</a>
 152      </p></dd><dt><span class="term"><acronym class="acronym">PGSQL</acronym></span></dt><dd><p>
 153       <a class="link" href="index.html" title="PostgreSQL 18.0 Documentation"><span class="productname">PostgreSQL</span></a>
 154      </p></dd><dt><span class="term"><acronym class="acronym">PGXS</acronym></span></dt><dd><p>
 155       <a class="link" href="extend-pgxs.html" title="36.18. Extension Building Infrastructure"><span class="productname">PostgreSQL</span> Extension System</a>
 156      </p></dd><dt><span class="term"><acronym class="acronym">PID</acronym></span></dt><dd><p>
 157       <a class="ulink" href="https://en.wikipedia.org/wiki/Process_identifier" target="_top">Process Identifier</a>
 158      </p></dd><dt><span class="term"><acronym class="acronym">PITR</acronym></span></dt><dd><p>
 159       <a class="link" href="continuous-archiving.html" title="25.3. Continuous Archiving and Point-in-Time Recovery (PITR)">Point-In-Time
 160       Recovery</a> (Continuous Archiving)
 161      </p></dd><dt><span class="term"><acronym class="acronym">PL</acronym></span></dt><dd><p>
 162       <a class="link" href="server-programming.html" title="Part V. Server Programming">Procedural Languages (server-side)</a>
 163      </p></dd><dt><span class="term"><acronym class="acronym">POSIX</acronym></span></dt><dd><p>
 164       <a class="ulink" href="https://en.wikipedia.org/wiki/POSIX" target="_top">Portable Operating
 165       System Interface</a>
 166      </p></dd><dt><span class="term"><acronym class="acronym">RDBMS</acronym></span></dt><dd><p>
 167       <a class="ulink" href="https://en.wikipedia.org/wiki/Relational_database#RDBMS" target="_top">Relational
 168       Database Management System</a>
 169      </p></dd><dt><span class="term"><acronym class="acronym">RFC</acronym></span></dt><dd><p>
 170       <a class="ulink" href="https://en.wikipedia.org/wiki/Request_for_Comments" target="_top">Request For
 171       Comments</a>
 172      </p></dd><dt><span class="term"><acronym class="acronym">SGML</acronym></span></dt><dd><p>
 173       <a class="ulink" href="https://en.wikipedia.org/wiki/Standard_Generalized_Markup_Language" target="_top">Standard Generalized
 174       Markup Language</a>
 175      </p></dd><dt><span class="term"><acronym class="acronym">SNI</acronym></span></dt><dd><p>
 176       <a class="ulink" href="https://en.wikipedia.org/wiki/Server_Name_Indication" target="_top">
 177        Server Name Indication</a>,
 178       <a class="ulink" href="https://datatracker.ietf.org/doc/html/rfc6066#section-3" target="_top">RFC 6066</a>
 179      </p></dd><dt><span class="term"><acronym class="acronym">SPI</acronym></span></dt><dd><p>
 180       <a class="link" href="spi.html" title="Chapter 45. Server Programming Interface">Server Programming Interface</a>
 181      </p></dd><dt><span class="term"><acronym class="acronym">SP-GiST</acronym></span></dt><dd><p>
 182       <a class="link" href="spgist.html" title="65.3. SP-GiST Indexes">Space-Partitioned Generalized Search Tree</a>
 183      </p></dd><dt><span class="term"><acronym class="acronym">SQL</acronym></span></dt><dd><p>
 184       <a class="ulink" href="https://en.wikipedia.org/wiki/SQL" target="_top">Structured Query Language</a>
 185      </p></dd><dt><span class="term"><acronym class="acronym">SRF</acronym></span></dt><dd><p>
 186       <a class="link" href="xfunc-c.html#XFUNC-C-RETURN-SET" title="36.10.9. Returning Sets">Set-Returning Function</a>
 187      </p></dd><dt><span class="term"><acronym class="acronym">SSH</acronym></span></dt><dd><p>
 188       <a class="ulink" href="https://en.wikipedia.org/wiki/Secure_Shell" target="_top">Secure
 189       Shell</a>
 190      </p></dd><dt><span class="term"><acronym class="acronym">SSL</acronym></span></dt><dd><p>
 191       <a class="ulink" href="https://en.wikipedia.org/wiki/Transport_Layer_Security#SSL_1.0,_2.0,_and_3.0" target="_top">Secure Sockets Layer</a>
 192      </p></dd><dt><span class="term"><acronym class="acronym">SSPI</acronym></span></dt><dd><p>
 193       <a class="ulink" href="https://msdn.microsoft.com/en-us/library/aa380493%28VS.85%29.aspx" target="_top">Security
 194       Support Provider Interface</a>
 195      </p></dd><dt><span class="term"><acronym class="acronym">SYSV</acronym></span></dt><dd><p>
 196       <a class="ulink" href="https://en.wikipedia.org/wiki/UNIX_System_V" target="_top">Unix System V</a>
 197      </p></dd><dt><span class="term"><acronym class="acronym">TCP/IP</acronym></span></dt><dd><p>
 198       <a class="ulink" href="https://en.wikipedia.org/wiki/Transmission_Control_Protocol" target="_top">Transmission
 199       Control Protocol (TCP) / Internet Protocol (IP)</a>
 200      </p></dd><dt><span class="term"><acronym class="acronym">TID</acronym></span></dt><dd><p>
 201       <a class="link" href="datatype-oid.html" title="8.19. Object Identifier Types">Tuple Identifier</a>
 202      </p></dd><dt><span class="term"><acronym class="acronym">TLS</acronym></span></dt><dd><p>
 203       <a class="ulink" href="https://en.wikipedia.org/wiki/Transport_Layer_Security" target="_top">
 204       Transport Layer Security</a>
 205      </p></dd><dt><span class="term"><acronym class="acronym">TOAST</acronym></span></dt><dd><p>
 206       <a class="link" href="storage-toast.html" title="66.2. TOAST">The Oversized-Attribute Storage Technique</a>
 207      </p></dd><dt><span class="term"><acronym class="acronym">TPC</acronym></span></dt><dd><p>
 208       <a class="ulink" href="http://www.tpc.org/" target="_top">Transaction Processing
 209       Performance Council</a>
 210      </p></dd><dt><span class="term"><acronym class="acronym">URL</acronym></span></dt><dd><p>
 211       <a class="ulink" href="https://en.wikipedia.org/wiki/URL" target="_top">Uniform Resource
 212       Locator</a>
 213      </p></dd><dt><span class="term"><acronym class="acronym">UTC</acronym></span></dt><dd><p>
 214       <a class="ulink" href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time" target="_top">Coordinated
 215       Universal Time</a>
 216      </p></dd><dt><span class="term"><acronym class="acronym">UTF</acronym></span></dt><dd><p>
 217       <a class="ulink" href="https://www.unicode.org/" target="_top">Unicode Transformation
 218       Format</a>
 219      </p></dd><dt><span class="term"><acronym class="acronym">UTF8</acronym></span></dt><dd><p>
 220       <a class="ulink" href="https://en.wikipedia.org/wiki/UTF-8" target="_top">Eight-Bit Unicode
 221       Transformation Format</a>
 222      </p></dd><dt><span class="term"><acronym class="acronym">UUID</acronym></span></dt><dd><p>
 223       <a class="link" href="datatype-uuid.html" title="8.12. UUID Type">Universally Unique Identifier</a>
 224      </p></dd><dt><span class="term"><acronym class="acronym">WAL</acronym></span></dt><dd><p>
 225       <a class="link" href="wal.html" title="Chapter 28. Reliability and the Write-Ahead Log">Write-Ahead Log</a>
 226      </p></dd><dt><span class="term"><acronym class="acronym">XID</acronym></span></dt><dd><p>
 227       <a class="link" href="datatype-oid.html" title="8.19. Object Identifier Types">Transaction Identifier</a>
 228      </p></dd><dt><span class="term"><acronym class="acronym">XML</acronym></span></dt><dd><p>
 229       <a class="ulink" href="https://en.wikipedia.org/wiki/XML" target="_top">Extensible Markup
 230       Language</a>
 231      </p></dd></dl></div><p>
 232  </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 18.0 Documentation">Home</a></td><td width="40%" align="right" valign="top"> Appendix M. Glossary</td></tr></table></div></body></html>