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What is object identity?
An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
Which file organization provides very fast access to any arbitrary record of a file? Hashed file organization provides very fast access to any arbitrary record of a file.
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
Define check point and its impact on data base recovery. Ans: There could be hundreds of transactions handled per minute, in a large on-line database system.
Which database object does not physically exist? A view database object does not physically exist.
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
Design a gennalization and specialization hierarchy for an automobile sales company
in case of functional dependencies how we get the higher normal form.
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
What is the function of a Domain? A domain defines the technical settings of a table field. A domain describes a value range, which sets the permissible data values for the
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