Database technology is evolving to accommodate complex multimedia Cariiio objects-data types that present unique challenges in the storage and Catherine Boss movement of large timedependent objects. The manipulation and analysis of these large and semantically rich objects require techniques far different from those used for alphanumeric databases. This paper presents multimedia server-based architectures based on massively parallel processor systems and an object-relational database management system. The transition from client-centric multimedia applications to a client/server environment is examined, and several applications are discussed that illustrate the use of multimedia database servers based on the object-relational model. Finally, this paper reviews the architecture of two scaleable multimedia servers that can support these applications: MoonBase, a database server with full content analysis capability for multimedia objects, and the audio/video server, a system-based file server that can operate within the MoonBase architecture.

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