skip to main |
skip to sidebar
20:07
Abdullah
Transaction servers-
Clients invoke remote procedures that reside on servers which also
contains an SQL database engine. There are procedural statements on the
server to execute a group of SQL statements (transactions) which either
all succeed or fail as a unit. The applications based on transaction
servers are called On-line Transaction Processing (OLTP) and tend to be
mission-critical applications which require 1-3 second response time,
100% of the time and require tight controls over the security and
integrity of the database.
20:02
Abdullah
Database servers-In
database servers, clients passes SQL (Structured Query Language)
requests as messages to the server and the results of the query are
returned over the network. The code that processes the SQL request and
the data resides on the server allowing it to use its own processing
power to find the requested data, rather than pass all the records back
to a client and let it find its owndata as was the case for the file
server.
19:20
Abdullah
File servers. -With a file server, the Computer Network client passes requests for
computer
network files or file records over a computer network to the file
server.
This form of computer network data service requires large
bandwidth and can slow a computer network with many users down
considerably. Traditional LAN (Local area Network) computing allows
users to share resources, such as data files and peripheral devices, by
moving them from standalone PCUs onto a Networked File Server (NFS).
