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.. _glossary: Glossary ======== From Wikipedia, the free encyclopedia .. glossary:: .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>