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What is object containment? References among objects can be used to model dissimilar real-world concepts.
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
When are they useful? Justify with an example. The temporary tables are commonly used to support specialized rollups or exact application processing needs. Unlike a permanent t
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how design database from begining
Explain the main advantages of DBMS over File Oriented System ?
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
Synonyms and Indexes Some of the essential properties of indexes are: An Index is a schema Object Indexes can be formed explicitly or automatically Indexes are m
for the following business rules . Identify all entities, attributes, relationships, primary keys, cardinalities and constraints where appropriate 3. (9) An art museum owns a larg
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