Suppose that you have been hired as a consultant to choose a database system for your client’s application. For each of the following applications, state what type of database system (relational, persistent-programming-language–based OODB, object relational; do not specify a commercial product) you would recommend. Justify your recommendation.

a. A computer-aided design system for a manufacturer of airplanes

b. A system to track contributions made to candidates for public office

c. An information system to support the making of movies