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List the requirements needed to design a trigger. The requirements are:- Specifying when a trigger is to be implemented. State the actions to be taken when the trigger im
Give the reasons for allowing concurrency? The reasons for allowing concurrency is if the transactions run serially, a short transaction might have to wait for a preceding long
State the terms Designing the database and Normalization Designing the database: Out of the ERD we have formed, it is very easy to verify the tables, the attributes which the
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
Complexity : A distributed DBMS that is available, reliable, and secure is inherently more difficult than a centralised DBMS. Though, adequate data replication is essential to have
I have to solve a problem using access
What is the use of Union and intersection operation? Union: The result of this operation contains all tuples that are either in r1 or in r2 or in both r1 and r2.Duplicate tuple
ER diagram on cosmetics
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
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