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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
What are the drawbacks of File Oriented System in details?
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
the of super market system done in database
Give the Introduction of OBJECT DESIGN Strategies which are selected during system design are carried out in object-oriented design. In this procedure, objects which are identi
What are the typical phases of query processing
how to calculate frequency count of algorithm
What is completeness constraint on generalization? Define the variation between total and partial design constraint. Give an example each. Ans: Completeness Constraints
Q. Describe how an ER schema can be represented by relation schemas and constraints arising from ER design can be mapped to constraints on a relation schema. The entity rela
Update Operations and Dealing with Constraint Violations There are three basic operations to be executes on relations: Insertion Deletion Update The INSER
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