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ACID. In computer science, ACID ( atomicity, consistency, isolation, durability) is a set of properties of database transactions intended to guarantee data validity despite errors, power failures, and other mishaps. [1] In the context of databases, a sequence of database operations that satisfies the ACID properties (which can be perceived as a ...
History. SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd in the early 1970s. This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
Database testing mainly deals with finding errors in the databases so as to eliminate them. This will improve the quality of the database or web-based system. Database testing should be distinguished from strategies to deal with other problems such as database crashes, broken insertions, deletions or updates.
Oracle includes a Unit Tester as part of the free SQL Developer application. Yes pl/unit: PL/Unit is a unit testing framework that provides the functionality to create unit tests for PL/SQL code. PL/Unit is expressed as one package that is compiled into the database and made available for use by PL/SQL unit tests. No
Perl, Ruby, Shell, XML. A collection of build and release tools. Included is the 'precommit' module that is used to execute full and partial/patch CI builds that provides static analysis of code via other tools as part of a configurable report. Built-in support may be extended with plug-ins. Astrée.
MySQL ( / ˌmaɪˌɛsˌkjuːˈɛl /) [5] is an open-source relational database management system (RDBMS). [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.
SQL Server 4.21 SQL95 SQL Server 6.0 Hydra SQL Server 6.5 Sphinx SQL Server 7.0 Plato OLAP Services 7.0 "OLAP Services" was later renamed Microsoft Analysis Services: Shiloh SQL Server 2000 Version 8 Rosetta Reporting Services in SQL Server 2000 Yukon SQL Server 2005 Version 9 Picasso Analysis Services in SQL Server 2005 Katmai
mSQL was the first low-cost SQL-based database management system. [citation needed] Combined with the free Linux operating system, the availability of relatively powerful low-cost PC hardware, and the development of World Wide Web standards and technologies, mSQL was an important factor in the early development of interactive, dynamic web ...