EXAMIANS
Sequential retrieval on a primary key for sequential file storage has which of the following features?
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When storage space is scarce and physical records cannot span pages, creating multiple physical records from one logical relation will minimize wasted storage space.
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What is the best data type definition for Oracle when a field is alphanumeric and has a fixed length?
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Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process.
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What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?
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A pointer is a detailed coding scheme recognized by system software for representing organizational data.
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Which of the following is not a factor to consider when switching from small to large block size?
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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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Hashing algorithm converts a primary key value into a record address.
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Two basic constructs to link one piece of data with another piece of data: sequential storage and pointers.
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