But the UP isn't only about the great outdoors. Marquette and the UP's smaller towns, such as Sault Ste. Marie, Houghton and Hancock, charm with attractions. Upper Peninsula Travel and Recreation Association. Tags: Upper Peninsula, Boating, Lighthouses, Hiking, Michigan, Lake Michigan.
Wiktionary (0.00 / 0 votes) Rate this definition: skeleton key (Noun). A very simple design of key that usually has a cylindrical shaft (sometimes called a shank) and a single, minimal flat, rectangular tooth or bit. skeleton key (Noun). A key that has parts filed away so that it will open a range of locks.
Candidate Key. Candidate keys are defined as the set of fields from which primary key can be selected. It is an attribute or set of attribute that can act as a primary key for a table to uniquely identify each record in that table.andidate Key. Candidate keys are defined as the set of fields from which primary key can be selected. It is an attribute or set of attribute that can act as a primary key for a table to uniquely identify each record in that table.