23-02-2013, 04:45 PM
Client server architecture of ddbms
Client server.pptx (Size: 262.04 KB / Downloads: 21)
What is a Distributed Database System?
A distributed database (DDB) is a collection of multiple, logically interrelated databases distributed over a computer network.
Communication software:
Software which we used to communicate from one point to another.
Semantic data controller:
Semantic data control typically includes view management, security control, and semantic integrity control.
Query optimizer:
The query optimizer is the component of a DBMS that attempts to determine the most efficient way to execute query.
Disadvantages of client/server
Implementation is more complex because one needs to deal with middleware and the network.
It is possible the network is not well suited for client/server communications and may become a bottleneck.
Additional burden on DBMS server to handle concurrency control, etc.