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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.
Explain the Static or conservative Two Phase Locking: Static (or conservative) Two Phase Locking: In this type of scheme, all the data items are locked earlier than any opera
Explain Hashing techniques The hashing techniques can be categorized as: Static Hashing Techniques - In this method, the data can be viewed a collection of buckets, along with
It defines that the tuple in one relation that refers to another relation must refer to an existing tuple in that relation. This constraint is states on two relations (not essentia
what is stracture of dabms
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
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What is Foreign Key Foreign Key: Sometimes we may have to work with an attribute that does not have a primary key of its own. To recognize its rows, we have to use the primar
as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
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