CS348-Assign3_

CS348-Assign3_ - mean by view maintenance Give an example...

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Purdue University Computer Science Department CS 348: Information Systems (Fall 201 1 ) Prof: Bharat Bhargava Due, Oct. 6, 201 1 Homework # 3 1. Give an overview of the implementation issues involved in the Ingres database system. (see paper on web site) 2. What is a view? What is a materialized view? What do we
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Unformatted text preview: mean by view maintenance? Give an example of each of the above concepts. 3. Under what conditions, should we allow null values in a database? How do aggregate functions treat null values? 4. What is referential integrity? Give an example....
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