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what is lossless & dependency preserving decomposition ?
Question: In a multi-user database environment, locking mechanisms can be used to solve the three basic problems of concurrency. On the other hand, however, locking may also le
Why is need for the multiple access paths?
3. (10 points) Assume that you have been presented with the following relation for the Baxter Aviation database: Charters (Pilot#, Pilot name, Aircraft ID#, #seats, Village, Fligh
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
What is a value? A data value is used for identity. This form of identity is used in relational systems.eg: The primary key value of a tuple recognize the tuple.
Identify the need and use of data control through problem solving, illustration
Why is database redesign necessary? Database redesign is essential for two reasons. First, redesign is essential both to fix mistakes made during the initial database design. S
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
management information system based on functional organisation
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