23. The memory medium of claim 22 wherein the wildcard is at least one of a single character wildcard operator, the characters “*” or “?”, a multi-character wildcard operator, or a word wildcard operator.
22. The memory medium of claim 1 wherein a wildcard can be specified as the value of a search term of a prepositional constraint component, a keyword constraint component, or a metadata constraint component or as a parameter of the base component.