.htaccess
  the default name of Apache's directory-level configuration file.

  .. seealso:: <https://en.wikipedia.org/wiki/.htaccess>

ACL
  Access Control List

Blowfish
  a keyed, symmetric block cipher, designed in 1993 by `Bruce Schneier <https://en.wikipedia.org/wiki/Bruce_Schneier>`_.

  .. seealso:: <https://en.wikipedia.org/wiki/Blowfish_(cipher)>

Browser
  a software application that enables a user to display and interact with text, images, and other information typically located on a web page at a website on the World Wide Web.

  .. seealso:: <https://en.wikipedia.org/wiki/Web_browser>

bzip2
  a free software/open-source data compression algorithm and program developed by Julian Seward.

  .. seealso:: <https://en.wikipedia.org/wiki/Bzip2>

CGI
  Common Gateway Interface is an important World Wide Web technology that
  enables a client web browser to request data from a program executed on
  the web server.

  .. seealso:: <https://en.wikipedia.org/wiki/Common_Gateway_Interface>

Changelog
  a log or record of changes made to a project.

  .. seealso:: <https://en.wikipedia.org/wiki/Changelog>

Client
  a computer system that accesses a (remote) service on another computer by some kind of network.

  .. seealso:: <https://en.wikipedia.org/wiki/Client_(computing)>

column
  a set of data values of a particularly simple type, one for each row of the table.

  .. seealso:: <https://en.wikipedia.org/wiki/Column_(database)>

Cookie
  a packet of information sent by a server to a World Wide Web browser and then sent back by the browser each time it accesses that server.

  .. seealso:: <https://en.wikipedia.org/wiki/HTTP_cookie>

CSV
  Comma-separated values

  .. seealso:: <https://en.wikipedia.org/wiki/Comma-separated_values>

DB
  look at :term:`Database`

Database
  an organized collection of data.

  .. seealso:: <https://en.wikipedia.org/wiki/Database>

Engine
  look at :term:`Storage Engines`

PHP extension
  a PHP module that extends PHP with additional functionality.

  .. seealso:: <https://en.wikipedia.org/wiki/Software_extension>

FAQ
  Frequently Asked Questions is a list of commonly asked question and their
  answers.

  .. seealso:: <https://en.wikipedia.org/wiki/FAQ>

Field
  one part of divided data/columns.

  .. seealso:: <https://en.wikipedia.org/wiki/Field_(computer_science)>

Foreign key
  a column or group of columns in a database row that points to a key column
  or group of columns forming a key of another database row in some
  (usually different) table.

  .. seealso:: <https://en.wikipedia.org/wiki/Foreign_key>

GD
  Graphics Library by Thomas Boutell and others for dynamically manipulating images.

  .. seealso:: <https://en.wikipedia.org/wiki/GD_Graphics_Library>

GD2
  look at :term:`GD`

GZip
  GZip is short for GNU zip, a GNU free software file compression program.

  .. seealso:: <https://en.wikipedia.org/wiki/Gzip>

host
  any machine connected to a computer network, a node that has a hostname.

  .. seealso:: <https://en.wikipedia.org/wiki/Host_(network)>

hostname
  the unique name by which a network-attached device is known on a network.

  .. seealso:: <https://en.wikipedia.org/wiki/Hostname>

HTTP
  Hypertext Transfer Protocol is the primary method used to transfer or
  convey information on the World Wide Web.

  .. seealso:: <https://en.wikipedia.org/wiki/HyperText_Transfer_Protocol>

HTTPS
  a :term:`HTTP`-connection with additional security measures.

  .. seealso:: <https://en.wikipedia.org/wiki/HTTPS>

IEC
  International Electrotechnical Commission

IIS
  Internet Information Services is a set of internet-based services for
  servers using Microsoft Windows.

  .. seealso:: <https://en.wikipedia.org/wiki/Internet_Information_Services>

Index
  a feature that allows quick access to the rows in a table.

  .. seealso:: <https://en.wikipedia.org/wiki/Database_index>

IP
  "Internet Protocol" is a data-oriented protocol used by source and
  destination hosts for communicating data across a packet-switched
  internetwork.

  .. seealso:: <https://en.wikipedia.org/wiki/Internet_Protocol>

IP Address
  a unique number that devices use in order to identify and communicate with each other on a network utilizing the Internet Protocol standard.

  .. seealso:: <https://en.wikipedia.org/wiki/IP_Address>

IPv6
  IPv6 (Internet Protocol version 6) is the latest revision of the
  Internet Protocol (:term:`IP`), designed to deal with the
  long-anticipated problem of its predecessor IPv4 running out of addresses.

  .. seealso:: <https://en.wikipedia.org/wiki/IPv6>

ISAPI
  Internet Server Application Programming Interface is the API of Internet Information Services (IIS).

  .. seealso:: <https://en.wikipedia.org/wiki/Internet_Server_Application_Programming_Interface>

ISP
  An Internet service provider is a business or organization that offers users
  access to the Internet and related services.

  .. seealso:: <https://en.wikipedia.org/wiki/Internet_service_provider>

ISO
  International Standards Organization

  .. seealso:: `ISO organization website <https://www.iso.org/about-us.html>`_
  .. seealso:: <https://en.wikipedia.org/wiki/International_Organization_for_Standardization>

JPEG
  a most commonly used standard method of lossy compression for photographic images.

  .. seealso:: <https://en.wikipedia.org/wiki/JPEG>

JPG
  look at :term:`JPEG`

Key
  look at :term:`Index`

LATEX
  a document preparation system for the TeX typesetting program.

  .. seealso:: <https://en.wikipedia.org/wiki/LaTeX>

Mac
   Apple Macintosh is a line of personal computers designed, developed, manufactured, and marketed by Apple Inc.

   .. seealso:: <https://en.wikipedia.org/wiki/Macintosh>

macOS
  the operating system which is included with all currently shipping Apple Macintosh computers in the consumer and professional markets.

  .. seealso:: <https://en.wikipedia.org/wiki/MacOS>

mbstring
   The PHP `mbstring` functions provide support for languages represented by multi-byte character sets, most notably UTF-8.

   If you have troubles installing this extension, please follow :ref:`faqmysql`, it provides useful hints.

   .. seealso:: <https://www.php.net/manual/en/book.mbstring.php>

Media type
  A media type (formerly known as MIME type) is a two-part identifier
  for file formats and format contents transmitted on the Internet.

  .. seealso:: <https://en.wikipedia.org/wiki/Media_type>

MIME
  Multipurpose Internet Mail Extensions is
  an Internet Standard for the format of e-mail.

  .. seealso:: <https://en.wikipedia.org/wiki/MIME>

module
  modular extension for the Apache HTTP Server httpd.

  .. seealso:: <https://en.wikipedia.org/wiki/Apache_HTTP_Server>

mod_proxy_fcgi
  an Apache module implementing a Fast CGI interface; PHP can be run as a CGI module, FastCGI, or
  directly as an Apache module.

  .. seealso:: <https://en.wikipedia.org/wiki/Mod_proxy>

MySQL
  a multithreaded, multi-user, SQL (Structured Query Language) Database Management System (DBMS).

  .. seealso:: <https://en.wikipedia.org/wiki/MySQL>

MySQLi
  the improved MySQL client PHP extension.

  .. seealso:: `PHP manual for MySQL Improved Extension <https://www.php.net/manual/en/book.mysqli.php>`_
  .. seealso:: <https://en.wikipedia.org/wiki/MySQLi>

mysql
  the MySQL client PHP extension.

  .. seealso:: <https://www.php.net/manual/en/book.mysql.php>

OpenDocument
  an open standard for office documents.

  .. seealso:: <https://en.wikipedia.org/wiki/OpenDocument>

OS X
  look at :term:`macOS`.

  .. seealso:: <https://en.wikipedia.org/wiki/MacOS>

PDF
  Portable Document Format is a file format developed by Adobe Systems for
  representing two-dimensional documents in a device-independent and
  resolution-independent format.

  .. seealso:: <https://en.wikipedia.org/wiki/PDF>

PEAR
  the PHP Extension and Application Repository.

  .. seealso:: `PEAR website <https://pear.php.net/>`_
  .. seealso:: `Wikipedia page for PEAR <https://en.wikipedia.org/wiki/PEAR>`_

PCRE
  Perl-Compatible Regular Expressions is the Perl-compatible regular
  expression functions for PHP

  .. seealso:: <https://www.php.net/pcre>
  .. seealso:: `PHP manual for Perl-Compatible Regular Expressions <https://www.php.net/pcre>`_
  .. seealso:: <https://en.wikipedia.org/wiki/Perl_Compatible_Regular_Expressions>

PHP
  short for "PHP: Hypertext Preprocessor", is an open-source, reflective
  programming language used mainly for developing server-side applications
  and dynamic web content, and more recently, a broader range of software
  applications.

  .. seealso:: <https://en.wikipedia.org/wiki/PHP>

port
  a connection through which data is sent and received.

  .. seealso:: <https://en.wikipedia.org/wiki/Port_(computer_networking)>

primary key
  A primary key is an index over one or more fields in a table with
  unique values for every single row in this table. Every table should have
  a primary key for easier accessing/identifying data in this table. There
  can only be one primary key per table and it is named always **PRIMARY**.
  In fact, a primary key is just an :term:`unique key` with the name
  **PRIMARY**. If no primary key is defined MySQL will use first *unique
  key* as primary key if there is one.

  You can create the primary key when creating the table (in phpMyAdmin
  just check the primary key radio buttons for each field you wish to be
  part of the primary key).

  You can also add a primary key to an existing table with `ALTER` `TABLE`
  or `CREATE` `INDEX` (in phpMyAdmin you can just click on 'add index' on
  the table structure page below the listed fields).

RFC
  Request for Comments (RFC) documents are a series of memoranda
  encompassing new research, innovations, and methodologies applicable to
  Internet technologies.

  .. seealso:: <https://en.wikipedia.org/wiki/Request_for_Comments>

RFC 1952
  GZIP file format specification version 4.3

  .. seealso:: :rfc:`1952`

Row (record, tuple)
  represents a single, implicitly structured data item in a table.

  .. seealso:: <https://en.wikipedia.org/wiki/Row_(database)>

Server
  a computer system that provides services to other computing systems over a network.

  .. seealso:: <https://en.wikipedia.org/wiki/Server_(computing)>

Sodium
  The Sodium PHP extension.

  .. seealso:: `PHP manual for Sodium extension <https://www.php.net/manual/en/book.sodium.php>`_

Storage Engines
  MySQL can use several different formats for storing data on disk, these
  are called storage engines or table types. phpMyAdmin allows a user to
  change their storage engine for a particular table through the operations
  tab.

  Common table types are InnoDB and MyISAM, though many others exist and
  may be desirable in some situations.

  .. seealso:: `MySQL doc chapter about Alternative Storage Engines <https://dev.mysql.com/doc/refman/8.0/en/storage-engines.html>`_
  .. seealso:: <https://en.wikipedia.org/wiki/Database_engine>

socket
  a form of inter-process communication.

  .. seealso:: <https://en.wikipedia.org/wiki/Unix_domain_socket>

SSL
  Secure Sockets Layer, (now superseded by TLS) is a cryptographic protocol
  which provides secure communication on the Internet.

  .. seealso:: <https://en.wikipedia.org/wiki/Transport_Layer_Security>

Stored procedure
  a subroutine available to applications accessing a relational database system

  .. seealso:: <https://en.wikipedia.org/wiki/Stored_procedure>

SQL
  Structured Query Language

  .. seealso:: <https://en.wikipedia.org/wiki/SQL>

table
  a set of data elements (cells) that is organized, defined and stored as
  horizontal rows and vertical columns where each item can be uniquely
  identified by a label or key or by its position in relation to other
  items.

  .. seealso:: <https://en.wikipedia.org/wiki/Table_(database)>

tar
  a type of archive file format, from "Tape Archive".

  .. seealso:: <https://en.wikipedia.org/wiki/Tar_(computing)>

TCP
  Transmission Control Protocol is one of the core protocols of the
  Internet protocol suite.

  .. seealso:: <https://en.wikipedia.org/wiki/Internet_protocol_suite>

TCPDF
  PHP library to generate PDF files.

  .. seealso:: <https://tcpdf.org/>
  .. seealso:: <https://en.wikipedia.org/wiki/TCPDF>

trigger
  a procedural code that is automatically executed in response to certain events on a particular table or view in a database

  .. seealso:: <https://en.wikipedia.org/wiki/Database_trigger>

unique key
  A unique key is an index over one or more fields in a table which has a
  unique value for each row.  The first unique key will be treated as
  :term:`primary key` if there is no *primary key* defined.

URL
  Uniform Resource Locator is a sequence of characters, conforming to a
  standardized format, that is used for referring to resources, such as
  documents and images on the Internet, by their location.

  .. seealso:: <https://en.wikipedia.org/wiki/URL>

Web server
  A computer (program) that is responsible for accepting HTTP requests from clients and serving them web pages.

  .. seealso:: <https://en.wikipedia.org/wiki/Web_server>

XML
  Extensible Markup Language is a W3C-recommended general-purpose markup
  language for creating special-purpose markup languages, capable of
  describing many different kinds of data.

  .. seealso:: <https://en.wikipedia.org/wiki/XML>

ZIP
  a popular data compression and archival format.

  .. seealso:: <https://en.wikipedia.org/wiki/Zip_(file_format)>

Zlib
  an open-source, cross-platform data compression library by `Jean-loup Gailly <https://en.wikipedia.org/wiki/Jean-Loup_Gailly>`_ and `Mark Adler <https://en.wikipedia.org/wiki/Mark_Adler>`_.

  .. seealso:: <https://en.wikipedia.org/wiki/Zlib>

Content Security Policy
  The HTTP `Content-Security-Policy` response header allows web site administrators
  to control resources the user agent is allowed to load for a given page.

  .. seealso:: <https://en.wikipedia.org/wiki/Content_Security_Policy>
  .. seealso:: <https://developer.mozilla.org/en/docs/Web/HTTP/CSP>