A system for retrieving data from a database using a data management system includes a change retrieval engine that is coupled to the data management system. The guide mode includes an electronic program guide, which provides the viewer program information for tuned programs, and a tape index guide, which provides information for programs recorded on a video cassette. The front lens and the back lens are made of polycarbonate resins, polyurethane resins, polyester resins or polyamide resins.