Reference  provides an overview of database technology for both data warehouses and operational applications. Reference  provides detailed information on developing database applications.
 Blaha, Michael. A Manager's Guide to Database Technology: Building and Purchasing Better Applications. Upper Saddle River, NJ: Prentice Hall, 2001.
 Blaha, Michael and William Premerlani. Object-Oriented Modeling and Design for Database Applications. Upper Saddle River, NJ: Prentice Hall, 1998.
 Leavitt, Neal. "Whatever Happened to Object-Oriented Databases? IEEE Computer, August 2000, p. 1619.