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The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
Define the terms entity, attribute, role and relationship between the entities, giving examples for each of them. Ans: Entity: An entity is a "thing" or "object" in th
Define Two phase commit Two phase commit: To make sure atomicity, all the sites where a transaction is being executed must agree on the final outcome of the execution. The tran
a. Construct a query around any one of the functional divisions you made in 4a such that if executed in the distributed design of 4 would require reconstruction of at least two ho
Define two-phase locking protocol. Ans: Two-phase locking is significance in the context of ensuring that schedules are serializable. The two-phase locking protocol defines a p
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
notes about update opreation
How does Tuple-oriented relational calculus vary from domain-oriented relational calculus? The tuple-oriented calculus uses a tuple variables i.e., variable whose only allowed
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
we need example of 2phase locking
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