Discussion
In DML, RECONNCT command cannot be used with
Answer: B
In the CODASYL DML the RECONNECT command moves a member record from one set occurrence to another, and it cannot be used with a FIXED set, because in a FIXED retention class a member cannot be removed from its owner once it has been connected.
OPTIONAL set membership allows a member to be disconnected and reconnected, and MANDATORY allows it to be moved to another owner but not to be left unconnected, so RECONNECT works with these. So 'All of the above' is wrong.
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