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Basic Structure of SQL Queries Questions and Answers PDF Download eBook
MCQ: To specify explicitly that duplicates are not removed, SQL allows to use the keyword
- Whole
- Total
- All
- Complete
C
MCQ: Operating systems routinely performs read-ahead for consecutive blocks of an
- Operating system file
- Program
- Application
- Operation
A
MCQ: Many database systems do not support
- Dropping entire table
- Dropping of attributes
- Deleting table
- Deleting attributes
B
MCQ: A 'thing' or 'object' in the real world that is distinguishable from other objects, is known as
- Node
- Entry
- Entity
- Pointer
C
MCQ: The definition of 3NF permits certain functional dependencies that are not allowed in
- BCNF
- 1NF
- 2NF
- 3NF
A