## Appendix L. Acronyms

This is a list of acronyms commonly used in the PostgreSQL documentation and in discussions about PostgreSQL.

ANSI

  American National Standards Institute

API

  Application Programming Interface

ASCII

  American Standard Code for Information Interchange

BKI

  Backend Interface

CA

  Certificate Authority

CIDR

  Classless Inter-Domain Routing

CPAN

  Comprehensive Perl Archive Network

CRL

  Certificate Revocation List

CSV

  Comma Separated Values

CTE

  Common Table Expression

CVE

  Common Vulnerabilities and Exposures

DBA

  Database Administrator

DBI

  Database Interface (Perl)

DBMS

  Database Management System

DDL

  Data Definition Language, SQL commands such as `CREATE TABLE`, `ALTER USER`

DML

  Data Manipulation Language, SQL commands such as `INSERT`, `UPDATE`, `DELETE`

DST

  Daylight Saving Time

ECPG

  Embedded C for PostgreSQL

ESQL

  Embedded SQL

FAQ

  Frequently Asked Questions

FSM

  Free Space Map

GEQO

  Genetic Query Optimizer

GIN

  Generalized Inverted Index

GiST

  Generalized Search Tree

Git

  Git

GMT

  Greenwich Mean Time

GSSAPI

  Generic Security Services Application Programming Interface

GUC

  Grand Unified Configuration, the PostgreSQL subsystem that handles server configuration

HBA

  Host-Based Authentication

HOT

  Heap-Only Tuples

IEC

  International Electrotechnical Commission

IEEE

  Institute of Electrical and Electronics Engineers

IPC

  Inter-Process Communication

ISO

  International Organization for Standardization

ISSN

  International Standard Serial Number

JDBC

  Java Database Connectivity

JIT

  Just-in-Time compilation

JSON

  JavaScript Object Notation

LDAP

  Lightweight Directory Access Protocol

LSN

  Log Sequence Number, see `pg_lsn` and WAL Internals.

MSVC

  Microsoft Visual C

MVCC

  Multi-Version Concurrency Control

NLS

  National Language Support

ODBC

  Open Database Connectivity

OID

  Object Identifier

OLAP

  Online Analytical Processing

OLTP

  Online Transaction Processing

ORDBMS

  Object-Relational Database Management System

PAM

  Pluggable Authentication Modules

PGSQL

  PostgreSQL

PGXS

  PostgreSQL Extension System

PID

  Process Identifier

PITR

  Point-In-Time Recovery (Continuous Archiving)

PL

  Procedural Languages (server-side)

POSIX

  Portable Operating System Interface

RDBMS

  Relational Database Management System

RFC

  Request For Comments

SGML

  Standard Generalized Markup Language

SPI

  Server Programming Interface

SP-GiST

  Space-Partitioned Generalized Search Tree

SQL

  Structured Query Language

SRF

  Set-Returning Function

SSH

  Secure Shell

SSL

  Secure Sockets Layer

SSPI

  Security Support Provider Interface

SYSV

  Unix System V

TCP/IP

  Transmission Control Protocol (TCP) / Internet Protocol (IP)

TID

  Tuple Identifier

TLS

  Transport Layer Security

TOAST

  The Oversized-Attribute Storage Technique

TPC

  Transaction Processing Performance Council

URL

  Uniform Resource Locator

UTC

  Coordinated Universal Time

UTF

  Unicode Transformation Format

UTF8

  Eight-Bit Unicode Transformation Format

UUID

  Universally Unique Identifier

WAL

  Write-Ahead Log

XID

  Transaction Identifier

XML

  Extensible Markup Language