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Define a table in SQL known as Client that is used to store information about the clients. Define CLIENT_NO as the primary key whose first letter must begin with ‘C'. Also ensure t
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Define Partial Key and Primary Key A partial key, also known as discriminator, is the set of attributes which can uniquely identify weak entities that are related to similar o
Give Concurrent sub states diagram for the classroom and exam held. In Figure, simultaneous substrates have been taken. After passing Minor 1 test you could give Minor 2 test. T
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
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
Explain four causes for failures in data warehouse projects
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