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Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
What are the advantages of object oriented databases in comparison with others? Why it is still not widely used? Object oriented designs are coherent, efficient and less prone
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
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
projects?
Whst is logical schema ? Logical schema is the entire database.
What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER
There are three main sources of utilities and applications for a DBMS: a. Vendor applications and utilities are given for working with or maintaining the database, and generally
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
What are views? Explain how views are different from tables? A view in SQL terminology is a one table in which is derived from other tables. These other tables could be base t
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