qdel - Delete a tuple from the relation.
qdel RelationDirectory UniqueId
qdel attempts to delete all traces of a tuple in the relation RelationDirectory having the unique record identifier UniqueId. It will automatically figure out whether the unique record identifier refers to added, changed or original records and delete the appropriate files. If the tuple has not been changed since the last stabilization, qdel will change the `V' to an `I' in the hidden attribute (%0).
qadd(1), qchange(1), qedit(1)
A Guide to QDDB
Eric H. Herrin II and Raphael A. Finkel
Qddb User's Guide
An ASCII Database for Fast Queries of Relatively Stable Data Eric H. Herrin II and Raphael A. Finkel Computing Systems, Volume 4 Number 2
University of California Press, Berkeley CA
Schema and Tuple Trees: An Intuitive Structure for Representing Relational Data
Eric H. Herrin, II and Raphael A. Finkel Computing Systems, Volume 9, Number 2
MIT Press, Cambridge MA
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