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Database Management Systems Chapter 5

SQL. Database Management Systems Chapter 5. R1. Example Instances. S1. We will use these instances of the Sailors and Reserves relations in our examples. If the key for the Reserves relation contained only the attributes sid and bid , how would the semantics differ?. S2. View.

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View ( virtual table )

View ( virtual table ). View. A VIEW is a virtual table A view contains rows and columns, just like a real table . The fields in a view are fields from one or more real tables in the database. A view is a table whose rows are not explicitly stored in the database .

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Database Management Systems Chapter 5

View ( virtual table )