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Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL . [ 1 ] It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions.
SQL is a well known query language and data manipulation language for relational databases; XQuery is a query language for XML data sources; XPath is a declarative language for navigating XML documents; YQL is an SQL-like query language created by Yahoo! Search engine query languages, e.g., as used by Google [5] or Bing [6]
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 ...
In January 2014, YouTube Nation was launched on its channel, as a collaborative project between YouTube and DreamWorks Animation. [6] DWA oversaw the production while YouTube managed the sales and marketing of the series. [7] The series is a news series that rounds up information from the Spotlight channel. [8]
This pre-established query command is kept in the data dictionary. Unlike ordinary base tables in a relational database , a view does not form part of the physical schema : as a result set, it is a virtual table [ 1 ] computed or collated dynamically from data in the database when access to that view is requested.
Private Lessons is a 1981 American sex comedy film starring Sylvia Kristel, Howard Hesseman, Eric Brown, and Ed Begley Jr. [4] The screenplay was written by Dan Greenburg , who wrote the original source novel, Philly .
Deadly Lessons (also known as Highschool Killer) is a 1983 American made-for-television horror film starring Donna Reed, Larry Wilcox, David Ackroyd, Diane Franklin, Ally Sheedy, and Nancy Cartwright. The film premiered on ABC on March 7, 1983.
The Tango Lesson (Spanish: La lección de tango) is a 1997 drama film written and directed by Sally Potter. It is a semi-autobiographical film starring Potter and Pablo Verón, about Argentinian Tango .
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