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Differentiate between a unique key and a primary key.
- By default, clustered index on column are created by primary key while nonclustered index are created by unique key.
- Primary key doesn't allow NULLs however unique key allows one NULL.
Explain the disadvantages of a file processing system? Ans: Disadvantages of File Processing Systems include: 1) Data Redundancy 2) Data Inconsistency 3) Difficult to acce
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Explain the Static or conservative Two Phase Locking: Static (or conservative) Two Phase Locking: In this type of scheme, all the data items are locked earlier than any opera
An object-oriented design process 1. Define the context and modes 2. Designs the system architecture 3. Identifies the principal system objects 4. Identifies concurrency in
A table joined with itself is called ? A table joined with itself is known as self join table. Normal 0 false false false EN-IN X-NONE X-NONE
The Maximum no of key fields that can be used in a header is?? 50
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