| DESCRIPTION |
This file stores information about keys on a file or subfile. A key is a
key. This index is called the uniqueness index.
All key fields must have values. They cannot be null.
set of one or more fields that uniquely identifies a record in a file. If
more than one set of fields can uniquely identify a record, one of those
sets should be designated the primary key; all others should be designated
secondary keys. The primary key is the principal means of identifying
records in the file.
To allow FileMan to enforce key uniqueness, the database designer must
define a regular index that consists of all the fields that make up the
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