Muhammad Faraz Qaisrani from the 2nd Batch at Benazir Bhutto Shaheed University discusses types of distributed database management systems (DDBMS). There are two main types: homogeneous, where all data centers use the same software, and heterogeneous, where different data centers may use different database products. Homogeneous systems are easier to design and manage but can be difficult for organizations to implement uniformly. Heterogeneous systems allow integration of existing databases but require translations between different hardware and software.

2. I am known as
Muhammad Faraz Qaisrani
From
2nd Batch
In
Benazir Bhutto Shaheed University

3. Topic of Today
Types of DDBMS
 Homogeneous
 Heterogeneous

4. Distributed Database System
“A logically interrelated collection of
shared data physically distributed over a
computer network.”

5. Types of Distributed Database System
 Homogeneous
 Heterogeneous
DDBMS
Homogenous Heterogeneous

6. Homogenous Distributed Database Systems
In this type of database has all data center
have same software
Much easier to design and manage.
It appears to user as a single system

7. Homogeneous Database
Same software

8. Advantages of Homogeneous Distributed Database
 Easy to use
 Easy to mange
 Easy to Design
Disadvantages of Homogeneous Distributed Database
 Difficult for most organizations to force a
homogeneous environment

9. Heterogeneous Distributed Database Systems
In this type of database , Different data center may run different DBMS products, with
possibly different underlying data models.
Occurs when sites have implemented their own databases and integration is considered
later.
Translations required to allow for:
o Different hardware.
o Different DBMS products.
o Different hardware and different DBMS products.

10. Heterogeneous Distributed database
Sql oracle

11. Advantages of Heterogeneous Distributed Database
Huge data can be stored in one Global center from different data
center
Remote access is done using the global schema.
Different DBMSs may be used at each node
Disadvantages of Heterogeneous Distributed Database
Difficult to mange
Difficult to design.

12. If you have any question so Please raise you hand

13. ALLAH HAFFIZ