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DB2-DBMS, Schemas & Transaction Processing
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2 External schema System User Authorisation level Library catalogue maintenance Senior Librarian 3(add, remove, enquire) Librarian 2(add, enquire) Teacher 1(enquire) Student 1 Student Union Student 3 Teacher 1 Librarian 2 Course information Teacher 3 Student 1 Librarian 1 The role of the external schema is to support individual user views of data rather than overall view of data and to provide Librarians with easier data access.
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Paper Information
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Title: DB2-DBMS, Schemas & Transaction Processing
Words: 260
Rating: None
Pages: 1
submitted by: jhs8546
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