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Which is another name for weak entity? Child is another name of weak entity.
Describe Participation Constraints? Participation Constraints - The participation constraint exacts whether the existence of an entity depends on its being related to another
What are the several forms of identity? a) Value b) Name c) Built-in
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Can we delete data element, which is being used by table fields. No we cant delete data element.
Explain the Functional Mode with help of an example. Functional Model The functional model shows a computation and functional derivation of data values in it without ind
Q. What is relational algebra and calculus? Explain the relational algebra operators :- Selection and predicate, set operation, joins and division. Sol. Relational Algebra
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
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