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Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
Why is database design important?
SET concept is used in which type of modelling? SET concept is used in Network Model.
Which operator is used to compare a value to a list of literals values that have been specified? BETWEEN operator is used to compare a value to a list of literals values that h
Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
What is Relational Algebra? Relational algebra is a Procedural query Language?
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
define attribute inheritance with example?
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