ICT role in 21st century education and it's challenges.
MultiMedia dbms
1.
2. It is not the conventional alphanumerical data.
It is a collection of
Text,
Image,
Audio or
Video.
3. The information provided by multimedia data explains
more than what a conventional data explains.
4. A multimedia database management system is a
framework that manages multimedia data. It can also do
operations with those multimedia data.
5. The Multimedia data can be stored in 3 parts.
They are
Raw Data
Registering Data
Descriptive Data
6. 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
7. In MMDBMS there are different data types.
They are:-
Text
Image
Audio
Video
8. Character represents RAW data
Registering data describe the Coding
Descriptive data include data about layout, structuring.
9. Pixels represent RAW data.
Registering data include length and height of image.
Descriptive data are individual line, subject and surfaces.
10. Raw data contains the digital samples of audio.
Registering data contains the properties of audio coding.
Descriptive data contains the content of audio.
11. Pixel matrices represent the raw data.
Registering data provides the number of images per
second.
Descriptive data provides scene description.
12. The operations are
Input
Output
Modification
Deletion
Comparison
Evaluation
13. Input
Data will be written to the database.
RAW and Registering data is mandatory.
Descriptive data is optional.
Output
Reads the data from database as per the registering
data.
14. Modification
Changing of RAW, Registering and descriptive data.
Deleting
Removes the entry from database.
15. Comparison
Search and Retrieval of stored data.
Pattern Matching Technique is used.
Evaluation
Generation of descriptive data from Raw and
Registering data.
16. Design of multimedia database is based on two different
DBMS.
They are:-
ERDBMS
OODBMS
17. OODBMS
Different medias are represented by classes, whose
instance variable include the data as internal state.
ERDBMS
Embedding new functions and types into RDBMS.