During the last decade, multimedia has emerged as a major research and de- velopment area. Pushed by advanced technology like huge-capacity storage de- vices, fast networks, and powerful work stations, new applications have arisen. Many definitions of multimedia systems exist, one of them being computer sys- tems that support interactive use of at least one of the following information sources: graphics, image, voice, sound, and video. These systems have caused a boom in the world of entertainment, but also in other business areas great opportunities for novel products and services are available. The size of multi- media data is often huge, and the storage of huge amounts of data is a task normally allocated to database management systems. Although some modern database management systems offer facilities to support development of multi- media applications, many problems related to multimedia support are still not well understood. This book reports on research efforts to solve some of these problems. An in- troductory knowledge of databases, and also of operating systems and network technology is assumed. The book is very suitable as material for courses at senior or graduate level, but also for upgrading the skills of computer scientists working on database management systems, multimedia systems or applications. The book consists of four parts. Part I is called "Requirements for a Mul- timedia Database" and comprises chapters one to three. Chapter one presents an outline of the book.
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