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What are the properties in a relation ?
In a relation Ordering of rows is immaterial and No two rows are identical.
triggering
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
Explain the rules for creating a labelled precedence graph for testing view serializability. Ans: A schedule S is view serializable if it is view equivalent to a ser
Submit the table creation statements (including constraints) for the Database Model. Submit them all in a single script file. Also submit a document explaining what test data yo
What is an Operand? The data on which the operation is to be performed is known as an Operand
Explain the Cartesian product: The Cartesian product operation does not need relations to union-compatible. The meaning of this is that the involved relations may have dissim
non numeric literals
what are information system hirarchy?
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
Draw an entity relationship diagram (ERD) for the following situation: A company has a number of employees. Each employee is identified by an Employee_Id. The company wants to st
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