More recent applicationsMultimedia databases

Multimedia Database

Host for storing, managing and retrieving media file types such as documents, images, audio, video etc.

Multimedia Database Management System

Framework that manages different types of data potentially represented in a wide diversity of formats on a wide array of media sources.

Why multimedia database?

• Use of personal computers as well as high definition gadgets such as digital cameras, scanners, printers, monitors.

• Increasing popularity of world wide web • Software applications requiring multimedia applications

Requirements

• Integration• Data independence• Concurrency control• Persistence• Privacy• Availability• Integrity control• Recovery• Query support• Manageability• Index and retrieval

Index and retrieval

• Different technology is used in multimedia database to enable search and retrieval.

• These are the standardized technology for coding multimedia data, natural and synthetic (e.g., photography and face animation, respectively), continuous and static (e.g., video and image, respectively), also describing content (Multimedia Description Interface) and for an open multimedia framework for a reasonable and interoperable use of multimedia in a disseminated environment. The relationship to some of the popular multimedia formats, mp3 and mp4, are based on the MPEG coding family.

• The database stored multimedia data are indexed and the information can be extracted from the search.

• Data can be manipulated or converted from one format to another while retaining the image quality controlled.

Manageability

• Synchronisation: Database stored images is directly linked to with the metadata. A single manipulation transaction on image will be automatically synchronised with the metadata

• Backup/Recovery (standby databases and replication) Images are automatically replicated if the advanced replication option is used, and for disaster recovery situations, image data is automatically transferred to a standby database

• Web base administrations: now database maintenance, administration, and performance review all can be done easily using web interface

MM Database Architecture

Based on Principle of Autonomy• Each media type is organized in a media-specific

manner suitable for that media type• Need to compute joins across different data structures• Relatively fast queryprocessing due to specialized structures• The only choice for legacy data banks

Based on Principle of Uniformity• A single abstract structure to index all media types• Abstract out the common part of different media types

(difficult!) - metadata• One structure – easy implementation• Annotations for different media types

MM Database Architecture

Based on Principle of Hybrid Organization• A hybrid of the first two. Certain media types use their

own indexes, while others use the "unified" index• An attempt to capture the advantages of the first two• Joins across multiple data sources using their native indexes

MM Database Architecture

Conclusion

• Works behind the screen as a backbone support for the integration and presentation of large amount of good quality multimedia data in an effective and efficient manner.

• The development and the extent of usage of MMDBMS will remain to be unforeseen as developments in networking capabilities as well as hardware technological advancements continue to push limits of this technology. As multimedia information exchange becomes very important nowadays, multimedia database system gets more tremendous development.

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