This document provides an overview of multimedia database management systems (MDBMS). It discusses that MDBMS can manage different types of multimedia data, including images, video, audio and more. The key tasks of a MDBMS include organizing, classifying, querying and supporting operations on multimedia data while enforcing data independence and integrity. MDBMS architectures typically feature three layers - an interface layer, an object composition layer to manage multimedia objects, and a storage layer for clustering and indexing multimedia data.

1. Multimedia Database
Management System
(MDBMS)

2. Requirement of Multimedia DBMS
• Large and new topics for research
• Many opening research topics– from
the data model, to storage to efficiency
of MDBMS.
• Persistence
• Privacy
• Integrity control
• Recovery
• Query Support

3. MDBMS
Presentation focuses on:
• General Overview of MDBMS
- Definition
- Characteristics of MDBMS
- Tasks of MDBMS
- Data Structure of MDBMS.
- MDBMS Design
- Operations on MDBMS.
- MDBMS Architectures

4. • Advantages of MDBMS
• Applications.
• Research Topics
• References.

5. MDBMS Overview
• Multimedia Data:
defines as many kinds of media—images,
video, audio, graphics, hypertext,
hypermedia, and other abstract data types.
• Multimedia Object:
a multimedia document or presentation
containing one or more multimedia data.

6. Overview (continued)
• Multimedia Database:
defines as a database containing one or
more multimedia object.

7. What is Multimedia data?
• It is not the conventional
alphanumerical data.
• Data Types:
1. Text
2. Image
3. Audio
4. Video.

8. Why Multimedia Data?
• The information provided by multimedia
data explains more than what a
conventional data explains.

9. What is Multimedia DBMS?
• A multimedia database management
system (MM DBMS) is a framework that
manages different types of data
potentially represented in a wide
diversity of formats.
• It can also do operations on these
multimedia data.

10. Characteristics of MDBMS
• Large object size
• Synchronous delivery of multimedia
objects
• Multimedia objects may have
embedded timing constraints
• Multimedia object composed of multiple
components

11. Characteristics (continued)
• Queries are not text or numeric based,
but Content-based
• Most multimedia transactions are long
and requires long processing and
retrieval time
• Multimedia Object presentation is very
important.

12. How data is stored in MMDBMS?
• The Multimedia data can be stored in 3
parts.
• They are
1. Raw Data
2. Registering Data
3. Descriptive Data

13. Data Structure
Multimedia data
Raw Data Registering Data Descriptive Data
(Uncompresse
d Image)
(Size & coding
details of raw data)
(Textual numerical
annotations)

14. • Descriptive Data
Information about content and structure
• Registering Data
Data necessary for interpretation and
identification i.e. Format.
• Raw Data
Unformatted Information Content i.e.
pixels.

15. Main Tasks of MDBMS
• Enforce data independence—physical
and logical level
• Organize, classify and query multimedia
data
• Support abstract data analysis for
searching engine

16. Tasks of MDBMS (continued)
• Support asynchronous requests and
operations
• Provide cost effective storage
management scheme
• Ensure data integrity constraints
• Provide basic operations as supported
by traditional databases—insert, delete,
search and update.

17. Tasks of MDMS (Continued)
MDBMS also has to support:
• Composition and decomposition of
Multimedia objects
• Security and intellectual property
protection
• Concurrency control and locking
mechanism
• Recovery
• Indexing and clustering

18. Operations on Multimedia Data
• The operations are
1. Input
2. Output
3. Modification
4. Deletion
5. Comparison
6. Evaluation

19. Input & Output
• Input
1. Data will be written to the database.
2. RAW and Registering data is
mandatory.
3. Descriptive data is optional.
• Output
Reads the data from database as per
the registering data.

20. Modifying & Deleting
• Modification
Changing of RAW, Registering and
descriptive data.
• Deleting
Removes the entry from database.

21. Comparison & Evaluation
• Comparison
1.Search and Retrieval of stored data.
2.Pattern Matching Technique is used.
• Evaluation
1.Generation of descriptive data from
Raw and registering data.

22. MDBMS Design
Approaches:
• File system – Not flexible, scalability
• Relational DBMS—No Content-based
indexing or query support and
Embedding new functions and types into
RDBMS.
• OODBMS—Binary Large Objects
(BLOB).
• Design from the scratch—Time
consuming.

23. ⇒ OODBMS
Multimedia OODBMS
Implementation difficulties (e.g.
Concurrency control) due to:
• Lack of control over OODBMS
• MDBMS requirements—Quality of
Service, Synchronization, and
Networking

24. MDBMS Architecture
three layers
Interface
Object composition
Storage
Interface: object browsing, query, compose and
decompose
Object Composition: Manage multimedia
objects
Storage: Clustering and indexing

25. MDBMS Architecture– continued
Multimedia DB
Source Data
Preprocessin
g Index
Multimedia
Application
Interface
Object
Composition
Storage

26. Architecture—Distributed MDBMS
Network A Network B
Presentation Device
AudioDBMS Image
Audio
Audio
Text
Video
DBMS DBMS
DBMS
DBMS
DBMS

27. Advantage of MDBMS
Multimedia Application: playback and
production (Script Language).
• Flexibility of script language
• Shared script and data structure
• Reuse of Multimedia objects
• Reduce data redundancy
• Data independences– physical and logical
• Improve Search and Retrieval
• Optimized storage

28. Advantages(continued..)
• efficient access
• complex search is also possible
• transaction protected multiuser mode
• recovery

29. Applications
• Libraries
• Educational Institutions
• Reverse Image searching
• Web albums