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In relational databases a virtual column is a table column whose value(s) is automatically computed using other columns values, or another deterministic expression. Virtual columns are defined of SQL:2003 as Generated Column, [1] and are only implemented by some DBMSs, like MariaDB, SQL Server, Oracle, PostgreSQL, SQLite and Firebird (database server) (COMPUTED BY syntax).
Basic functions: select database, select/edit tables, browse/insert/edit table rows; Searching or sorting via multiple columns; Editing of other database objects: views, triggers, events, stored procedures, processes, mysql variables, user permissions; Text area for arbitrary SQL commands and storing these commands in command history
MySQL Workbench is a visual database design tool that integrates SQL development, administration, database design, creation and maintenance into a single integrated development environment for the MySQL database system.
Development was stopped after Oracle purchased MySQL. [10] It was based on the Netfrastructure database engine. Falcon was designed to take advantage of Sun's zfs file system. FederatedX – InfiniDB – scalable, software-only columnar database management system [11] for analytic applications. [12]
phpMyAdmin is a free and open source administration tool for MySQL and MariaDB. As a portable web application written primarily in PHP , it has become one of the most popular MySQL administration tools, especially for web hosting services .
Starting from Oracle database 11g, iSqlplus (web based) and sqlplus GUI no longer ship with Oracle database software. [7] The command-line SQL Plus interface continues in use, mostly [ citation needed ] for non-interactive scripting or for administrative purposes.
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time said table is accessed.
InnoDB is a storage engine for the database management system MySQL and MariaDB. [1] Since the release of MySQL 5.5.5 in 2010, it replaced MyISAM as MySQL's default table type. [2] [3] It provides the standard ACID-compliant transaction features, along with foreign key support (declarative referential integrity).