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Physical Database Design
A bitmap index is an index on columns from two or more tables that come from the same domain of values.
True
Correct Answer:
False
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Physical Database Design
Hashing algorithm converts a primary key value into a record address.
Some advantages of partitioning include: efficiency, security, and load balancing.
When storage space is scarce and physical records cannot span pages, creating multiple physical records from one logical relation will minimize wasted storage space.
Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process.
Distributing the columns of a table into several separate physical records is known as horizontal partitioning.
Two basic constructs to link one piece of data with another piece of data: sequential storage and pointers.
Denormalization and clustering can work well to minimize data access time for small records.
An extent is a contiguous section of disk storage space.
A pointer is a detailed coding scheme recognized by system software for representing organizational data.
It is usually not very important to design the physical database to minimize the time required by users to interact with the information systems.
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