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What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
Types of Data fragmentation
Define functional and multivalued dependencies. Ans: A functional dependency is a assets of the semantics of the attributes in a relation. The semantics point out how at
how design database from begining
Before defines the second type of integrity constraint, viz., Entity Integrity, we should be well-known with the concept of NULL. Mostly, NULL is intended as a basis for dealing
Haw does it work one database application
Construct a generalization-specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles that comprise an engine number and cost; cars that have a chass
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
word limit no mentioned
what are the states of transaction?
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