Support for multimedia data types multimedia database

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Unformatted text preview: system to handle them are given in Chapter 19. The very nature of the multimedia data and the frequent requirement of handling several of them together (such as audio and video data have to be frequently handled together) make traditional database systems unsuitable for the storage and management of multimedia data. This limitation of traditional database systems motivated researchers to build technologies for multimedia database systems. We saw before in this chapter that a database consists of a collection of related data, while a database management system is a set of programs to define, create, store, access, manage and query the database. Similarly, we can view a multimedia database as a collection of multimedia data items, such as text, graphics, animation, audio, and video, and a multimedia database management system as a set of programs to define, create, store, access, manage, and query the multimedia database. Requirements for Multimedia Database Systems In order to deal with multimedia data, multimedia database systems must meet certain special requirements. These requirements are both from the perspective of special hardware and software requirements for the computer systems to be used for this purpose, and special database features needed for handling multimedia data. As the hardware and software requirements for handling multimedia data have been covered in Chapter 19, here we will discuss the database features needed for handling multimedia data. These features are discussed below. Support for Multimedia Data Storage and Retrieval By their very nature, multimedia data are characterized by huge volumes. A multimedia database should be capable of storing and managing several gigabytes of data for small multimedia data objects such as images, and several hundred terabytes or more if the database must hold significant amounts of video or animation data. To meet the requirement of huge data volumes, multimedia database systems often use a hierarchy of storage devic...
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This document was uploaded on 04/07/2014.

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