question 3. (30 pts) (6 points each) consider the following relations. the key fields are bold and underlined. employee (ssn, name) project1 (id, name, mgr ssn) work on (ssn, id, year)

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12-10-2022
Computers and Technology

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question 3. (30 pts) (6 points each) consider the following relations. the key fields are bold and underlined. employee (ssn, name) project1 (id, name, mgr ssn) work on (ssn, id, year)

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rekharaypriti8910 rekharaypriti8910 · Answer 1 · 2022-10-14T22:52:03+02:00

Designed for managing data stored in a relational database management system, SQL is a database language. IBM created SQL for the first time in the early 1970s (Date 1986).

The original SEQUEL (Structured English Query Language) version was created to access and handle data held in IBM's System R quasi-relational database management system. The first SQL implementation to be made commercially available was Oracle V2, which was released for VAX systems in the late 1970s by Relational Software Inc., later to become Oracle Corporation. In this chapter, we'll concentrate on utilizing SQL as a data defining language to build databases and table architectures (DDL).

Learn more about database here-

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