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Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
What is the use of integrity constraints? Integrity constraints make sure that changes made to the database by authorized users do not result in a loss of data consistency. The
Question : Mr. Smith Harry has a car manufacturing company which has recently integrated management information system. He wishes to obtain more information on ethics and socia
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
Explain the database Planning Project ?
what are the limitations of dbms?
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
Waterfall model is the linear model. The process is completed by step by step. We couldn't stop in between of the process. Prototype model: after get the model by low cost budget o
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
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