IT knowledge

      Data Data consists of unprocessed raw facts. Data is used as input in the computer. Data is not meaningful. Data is normally huge in its volume. Data is the asset of organization and is not available to people for sale. Data is difficult or even impossible to reproduce.Suppose Government loses data of census.It is almost impossible to reproduce it. Data is used rarely. Data is an independent entity. Data is not used in decision-making.       Information Information is the processed  form of data. Information is the output of computer. Information is meaningful. Information is normally short in volume. Information is normally available to people for sale. Information is easier to reproduce if lost.For example,if the list of illiterate citizens is lost,it can be reproduced easily from stored data. Information is used frequently. Information depends on data. Information is very important for decision-making.

             Client-server Architecture Client -server architecture is a network of computers.It consists of two types of computers known as clients and servers. The client computers process applications and server computers provide services to the client computers such as database processing.         Client-server database  system is based on client-server architecture.In this database system,the server computers stores and processes a database.The client computers use the database by sending requests to the server computer.