Selection

     (algorithm) One of the three basic building blocks of algorithm
     development (the others are sequence and iteration).  Selection allows
     control to flow along a number of possible paths, depending on the
     circumstance encountered.

     (database) A DBMS term that specifies a subset of records meeting a
     condition.  The selection itself is obtained with a selection operator.
     In CA-Clipper, the analogy is the FOR clause.