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What is meant by data-transfer rate? The data-transfer rate is the rate at which data can be retrieved from or kept to the disk.
it can be possible to create any table without primary key
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Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database admi
Design a gennalization and specialization hierarchy for an automobile sales company
List the data structures implemented by the storage manager. The storage manager executes the following data structure a) Data files b) Data dictionary c) indices
What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
Implementation and SQL Applications
Which operations need the participating relations to be union compatible? A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatibl
Explain the structure of well formed formulae in relational calculus. Ans: a. An atom is a formula b. If P1 is a formula, after that so are ¬P1 and (P1) c. If P1 and P2 a
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