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Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database administrator. Let us see some data control language commands:
What are the various states through which a transaction passes through in its lifetime? Briefly discuss all the events that causes transition from one state to another. Ans:
Natural Join : It is the similar like Equi join except one of the duplicate columns is removed in the result table. The natural join is the most usually used form of join operation
HOW MANY TYPES OF VIEWS
Which component is not included in database environment ? A users component is not included in database environment.
explain exhausitively the problems associated with er diagrams with ellustrations
Have database built but having problems with some questions that go with the database
brief history,definition,current trends and future trends if any of data fragmentation
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
notes about update opreation
Design an algorithm to implement operations Each and every operation specified in the functional model could be formulated as an algorithm. The algorithm indicates how operat
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