Digital images, video, audio, animation, and graphics together with text data are the typical multimedia data. The acquisition, generation, storing and processing of multimedia data in computers and transmission over network has a tremendous growth recently. This could be caused by several factors. The ubiquitous nature of personal computer and increasing computational power is one of the important factors. Technological advancement resulted in high-resolution device which able to capture and display multimedia data (digital cameras, scanner, HD monitors, etc). More and more multimedia data is needed because of its exciting features, friendliness and comprehensibility of images, voices and movies. The huge amount of data in different multimedia applications deserved to have the databases since the databases could provide consistency, integrity, security and availability of the data. From the user perspective, databases offer functionality for easy manipulation, query, and retrieval of relevant information from huge collections of stored data.
Multimedia databases have to cope up with the increasing usage of large volume of multimedia data used in various software applications. These applications include the journalism, art, entertainment, digital libraries, etc. Some inherent qualities of the multimedia data have influenced the design and the development of multimedia databases. A multimedia database requires more capability than the traditional DBMS. The capabilities include unified frameworks for storing, processing, retrieving and presenting variety of media data types in various formats. At the same time, it also has to adhere to numerical constraints which were not found in a typical database.
This report will address some major challenges in designing the multimedia database. It will discuss the general requirements of the multimedia database, query optimization and performance evaluation to measure the effectiveness of the database.
Design
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