schematic

Of, relating to, or in the form of a scheme or diagram.

A structural or procedural diagram, especially of an electrical or mechanical system.

Of the nature of, or pertaining to, a schema, in any sense; typical; made or done according to some fundamental plan: used in biology in much the same sense as archetypal.

Of or pertaining to a scheme or a schema.

represented simply

sketchy, incomplete

relating to a schema

A drawing or sketch showing how a system works at an abstract level.

diagram of an electrical or mechanical system

represented in simplified or symbolic form