Question

What do you mean by distributed database system advantages and disadvantages?

Answer 1

SOLUTION...he distribution of data and applications has potential advantages over traditional centralized databasesystems. Unfortunately, there are also disadvantages; in this section we review the advantages and disadvantages of DDBMS.

Advantages

There are following advantages of DDBMs:

Reflects organizational structure

Many organizations are naturally distributed over several locations. For example, a bank has many offices in different cities. It is natural for databases used in such an application to be distributed over these locations. A bank may keep a database at each branch office containing details such things as the staff that work at that location, the account information of customers etc.

Improved reliability

As data may be replicated so that it exists at more than one site, the failure of a node or a communication link does not necessarily make the data inaccessible.

DISADVANTEGES....

Complexity

A distributed DBMS that hides the distributed nature from the user and provides an acceptable level of performance, reliability, availability is inherently more complex then a centralized DBMS. The fact that data can be replicated also adds an extra level of complexity to the distributed DBMS. If the software does not handle data replication adequately, there wi1l be degradation in availability, reliability and performance compared with the centralized system, and the advantages we cites above will become disadvantages.

Cost

Increased complexity means that we can expect the procurement and maintenance costs for a DDBMS to be higher than those for a centralized DBMS. Furthermore, a distributed

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