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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.
- Spring '14