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Concept
Multimedia database
Summary
A Multimedia database (MMDB) is a collection of related for multimedia data. The multimedia data include one or more primary media data types such as text, s, graphic objects (including drawings, sketches and illustrations) animation sequences, audio and video.
A Multimedia Database Management System (MMDBMS) is a framework that manages different types of data potentially represented in a wide diversity of on a wide array of media sources. It provides support for multimedia data types, and facilitate for creation, storage, access, query and control of a multimedia database.
A Multimedia Database (MMDB) hosts one or more multimedia data types (i.e. text, images, graphic objects, audio, video, animation sequences).
These data types are broadly categorized into three classes:
Static media (time-independent: and graphic object).
Dynamic media (time-dependent: audio, video and animation).
Dimensional media(3D game and computer aided drafting programs).
Additionally, a Multimedia Database (MMDB) needs to manage additional information pertaining to the actual multimedia data.
The information is about the following:
Media data: the actual data representing an object.
Media format data: information about the of the media data after it goes through the acquisition, processing, and encoding phases.
Media keyword data: the keyword descriptions, usually relating to the generation of the media data.
Media feature data: content dependent data such as contain information about the distribution of colours, the kinds of textures and the different shapes present in an image.
The last three types are called metadata as they describe several different aspects of the media data. The media keyword data and media feature data are used as indices for searching purpose. The media format data is used to present the retrieved information.
Official source
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