Multiple choice technology databases

What information is not included in DBD

  1. access method

  2. segment name

  3. parameter

  4. key field length
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C Correct answer
Explanation

DBD (Database Descriptor) in IMS defines the physical structure of the database including access method, segment names, and key field lengths. However, 'parameter' as a general concept is not a specific piece of information stored in the DBD itself - parameters are part of application programs, not database descriptors.

AI explanation

A DBD (Database Description) in IMS/DL-I defines the physical and logical structure of a hierarchical database — things like segment names, access method, and key field length are all part of that structural metadata. Generic 'parameters' (in the sense of runtime parameters, not structural attributes) are not part of what a DBD describes, since a DBD is concerned with database structure, not runtime configuration values.

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