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Unformatted text preview: types such as video, audio and animation sequences also
have temporal (time-related) requirements, which have implications on their
storage, manipulation, and presentation. Similarly, images, graphics, and video
data have spatial (space-related) constraints in terms of their content. A
multimedia database system must be suitably designed to understand and meet
these additional requirements of these multimedia data types in order to handle
Support for Multimedia Data Relationships
A multimedia database system supports multiple data types. It is often required to
integrate two or more data types to form new composite multimedia data types and
present them to the user. Often composition and presentation of multimedia data
types requires spatial (space-related), temporal (time-related), and/or
synchronization relationships to be established among various data items of
different types. Spatial relationships organize the data's visual layout. For
example, superimposition of a text object on a specific part of a displayed
image/video object. Temporal relationships dictate the temporal layout, ensuring
the timely presentation of the right data. A simple example might be, "Play video
and audio al, and, when finished, play music ml until slide show s1 is done".
Synchronization relationships control the synchronized presentation of two or
more objects, such as maintaining lip synchronization between a movie and a
sound track. In order to take care of all such multimedia data composition and
presentation requirements, a multimedia database system should provide facilities
to define and support several kinds of relationships between multimedia data
Support for Multimedia Data Modeling A multimedia database model must haw features to capture the static and dynamic
properties of the database contents (multimedia data). The static properties could
include the data items that make up the multimedia data, the relationships between
the data items, the data item att...
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This document was uploaded on 04/07/2014.
- Spring '14