If backtracking occurs through the call of record/2 the associated Value is not removed from the indexed database. Recording the same Value twice results in two identical entries in the indexed database. All variables are recorded according to their internal representations.
   Success:
    record(a(compound,term),value1).
    record([a,different,term],value2).
    [eclipse]: record(whiskey,jameson),
    >        record(whiskey,glenlivet),
    >        record(whiskey,bushmills).
    yes.
    [eclipse]: recorded(whiskey,Value).
    Value = jameson     More (;)
    Value = glenlivet     More (;)
    Value = bushmills     More (;)
    no (more) solution.
Error:
    record(Key, anything).             (Error 4)
    record("key",anything).            (Error 5)