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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).
[5] [6] Its name is a combination of "My", the name of co-founder Michael Widenius's daughter My, [7] and "SQL", the acronym for Structured Query Language. A relational database organizes data into one or more data tables in which data may be related to each other; these relations help structure the data. SQL is a language that programmers use ...
A dense index in databases is a file with pairs of keys and pointers for every record in the data file. Every key in this file is associated with a particular pointer to a record in the sorted data file. In clustered indices with duplicate keys, the dense index points to the first record with that key. [3]
MariaDB version numbers follow MySQL's numbering scheme up to version 5.5. Thus, MariaDB 5.5 offers all of the MySQL 5.5 features. There exists a gap in MySQL versions between 5.1 and 5.5, while MariaDB issued 5.2 and 5.3 point releases.
Houston (/ ˈ h juː s t ən / ⓘ HEW-stən) is the most populous city in the U.S. state of Texas and the Southern United States.Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the seat of Harris County; as well as the principal city of the Greater Houston metropolitan area, the fifth-most populous metropolitan statistical area in the United States and the second ...
This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet.A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. [1]
Variant names included Setines, Satine, ... Climate data for downtown Athens (1991–2020, extremes 1890–present) ... 5 7 9 10 10 9 6 4 2 2 6
Outlander is a historical drama television series based on the Outlander series of historical time travel novels by Diana Gabaldon. Developed by Ronald D. Moore and produced by Sony Pictures Television and Left Bank Pictures for Starz, the show premiered on August 9, 2014. It stars Caitríona Balfe as Claire Randall, a married former World War II nurse, later surgeon, who in 1946 finds herself ...