The most significant phase in the development of a quality software project is Requirement engineering. The objective of the software requirement engineering is the elicitation of the requirements of the clients and their analysis. In general the requirements are expressed in natural languages which are ambiguous in nature. Ambiguity means ...

With the rapid growth of data amount, it is very crucial to reduce the storage space that data occupies and the bandwidth consumption during network transmission. As an important means of information security, data backup technology has attained increasing attention. This paper proposes the types of data backup and a ...