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What is conceptual schema?
The schemas at the view level are known as subschema that describe dissimilar views of the database.
Discuss the differences among the candidate keys and the primary key of a relation. Give instance to describe your answer? A candidate key is one that can be used as primary ke
WHAT IS DBMS
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
Removing a Synonym: DROP SYNONYM D30;
Define upgrade and downgrade? It gives a mechanism for conversion from shared lock to exclusive lock is called as upgrade. It gives a mechanism for conversion from exclusive
Question: (a) List four disadvantages of the File Processing System as compared to the Database Systems. (b) The integrity of a database is enforced by integrity rules. One
differences between a classified catalog and a dictionary catalog
Define cardinality and participation constraints on a relationship type, completeness constraint on generalization. Ans: Cardinality defines the number of entities to wh
real life situations where database management system are most suitable
Mention various steps required to draw an E-R Diagram. Draw an E-R Diagram for Student Information System. Mention all suitable assumptions to justify your answer.
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