Sevison Multimedia,”sevison multimedia informations flow wiwithing the company showing how the various employees interact with each other in the system. An important phase in the developemtn of a new system is the documentation of the infromation flow withing the existing systgem. In this step all the data in the system is recorded from when it is recieved through manipulation in the system, until the final information is proposed. In each phase it is provdiiging the system with the data, performing the manipulation and recieiving the infromation that is produced. There are a number of tools that are used to represent these features-data flow diagrams DFDs. content diagrams and entry relationship diagrams. The reason why this stage is so important, is that it allows the analyst to develop a complete understanding of the way in which the various parties interact with each other in the benfitis of identifying the areas in which the company has direct contact and those for which it must rely on outside sources. Obviously, when designing a new system there is no point in changing areas, which the compnay has no control over, such as specifying data muyst be recivived in a particular way
when the person who is supplying that data is under no pressure or obligation to chasing to change the way in which they supply the data.”