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SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] 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 ...
The CSV file format is one type of delimiter-separated file format. [4] Delimiters frequently used include the comma, tab, space, and semicolon. Delimiter-separated files are often given a ".csv" extension even when the field separator is not a comma. Many applications or libraries that consume or produce CSV files have options to specify an ...
Data analysis has multiple facets and approaches, encompassing diverse techniques under a variety of names, and is used in different business, science, and social science domains. [2] In today's business world, data analysis plays a role in making decisions more scientific and helping businesses operate more effectively.
The 2011 PlayStation Network outage (sometimes referred to as the 2011 PSN Hack) was the result of an "external intrusion" on Sony's PlayStation Network and Qriocity services, in which personal details from approximately 7.7 million accounts were compromised and prevented users of PlayStation 3 and PlayStation Portable consoles from accessing the service.
A commercial PL/SQL testing tool originally from Quest Software (the makers of Toad) and Steven Feuerstein. Quest Software was acquired by Dell in 2012 to form Dell Software . On November 1, 2016, the sale of Dell Software to Francisco Partners and Elliott Management Corporation was completed, and the company relaunched as Quest Software.