Presentation of Database Modal

2. Mubashar
Ashfaq
Mujhaid
Parvaiz
Superior University
Depalpur
M.Faizan

4. Types of Architecture Model
There is two types of Model
Client-server Model
Peer-to-Model

5. Client-Server Model
client-server Model is two level
architecture. First is a Client And
Second is a Server. In which
functionality is divided between server
and client computer

6. Client-Server Model
Server is responsible for
 data Management
Query processing
Transection management
Query Optimization

7. Client-Server Model
client is responsible for
User interface
Consistency control
Transaction management
Error free

8. Type of Client-Server Model
There are two types of Client
Server Model
 Single server-multiple client
 Multiple server-multiple client

9. Single server-multiple client
In single server-multiple client, the
single server are commination to
the multiple client

10. Single server-multiple client
ie
Application
software
Client services
Communication
managemrnt
Application
software
Client services
Communication
managemrnt
Application
software
Client services
Communication
managemrnt
Client n
Server 1
Client 1
Communication
line

11. Multiple server-multiple client
In multiple server-multiple client,
the multiple server are
commination to the multiple client

12. Multiple server-multiple client
ie
Application
software
Client services
Communication
management
Application
software
Client services
Communication
management
Communication
management
Database services
Client n
Server 1
Client 1
Communication
management
Database services
Server n
Communication
line

13. Peer-to-Peer Model
In this architecture, each computer
act as both server and client for
providing database serves.

14. Peer-to-Peer Model
Four level schema is used in peer-to-
peer architecture
 Global conceptual schema
 internal schema
Conceptual schema
External schema

15. Peer-to-Peer Model
Global conceptual schema
The global conceptual schema is
depict the global logical view of data.

16. Peer-to-Peer Model
Internal schema
Internal schema describe the physical
structure of database and access path
to data. physical structure mean how
data is stored in database

17. Peer-to-Peer Model
Conceptual schema
Conceptual schema describe the whole
structure of database while hiding the
detail of physicals structure. It specify
different entities, there relationship
and construct specify on data.

18. Instruction Set Architecture
External schema
External schema is used to describe the
user view or user interface.

19. Peer-to-Peer Model
External schema nExternal schema 2
Global Conceptual Schema
Conceptual schema 1 Conceptual schema 2 Conceptual schema n
internal schema 1 internal schema 2 internal schema n
External schema 1
Ie

21. ‫کرو‬ ‫جاندی‬