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Exercises StructuredQueryLanguage
SQL was one of the first commercial languages for Edgar F. Codd's relational model, as described in his influential 1970 paper, "A Relational Model of Data for Large Shared Data Banks".[5] Despite not adhering to the relational model as described by Codd, it became the most widely used database language.[6][7] Although SQL is often described as, and to a great extent is, a declarative language, it also includes procedural elements. SQL became...
15 p dtu 23/10/2012 202 1
Từ khóa: Exercises StructuredQueryLanguage, SQL Server, ngôn ngữ SQL, kỹ thuật dữ liệu, kỹ thuật máy tính, phần mềm máy tính