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Update Operations and Dealing with Constraint Violations
There are three basic operations to be executes on relations:
The INSERT Operation:
The insert operation permits us to insert a new tuple in a relation. When we try to insert a new record, then any of the following four types of constraints can be violated:
• Entity Integrity constraint: If the primary key attribute value of new tuple t is given as null.
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
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Define rotational latency time. The time spent waiting for the sector to be accessed to appear under the head is known as the rotational latency time.
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What are the requirements to ensure the objectives of file management principle is realized?
Hi I have got an assignment for making an er diagram for market management software can any budy help me?
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what should be included in this???
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