As we are moving into the information age there is a need to secure data transmission and also to store and retrieve the data and the information. Information Retrieval Systems are increasing with the advent of the technology. Let us fist talk about the basic differences between the data and the information. DATA: • It is the raw fact. • For its retrieval it needs to be fully mentioned. If the file name or the document name is not known or is case sensitive, there are chances for the system to fail and do not retrieve any document. • Examples of data are a piece of paper, a book, an algorithm. • In the above examples their location is not known and hence the meaning cannot be given to this data INFORMATION • Information is processed data. • For its retrieval a partial information is enough for its evaluation. Hence, the system never fails. • Examples of information are a piece of paper on a table, a book in the shelf, a bubble-sort algorithm. • In the above examples their location are