A secondary key is an alternate identifier for a database. Its value may identify either a single record or a subset of all records.
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Q26: The cost of developing databases is higher
Q27: A field is the physical implementation of
Q28: A file is the physical implementation of
Q29: A primary key is a field whose
Q30: A foreign key is a field whose
Q32: A primary key might be created by
Q33: An index is frequently created for keys.
Q34: Foreign keys are pointers to the records
Q35: A descriptive field is any other non-key
Q36: A record is a collection of fields
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