An information base for procedure independent design of information systems
Levent Ormancioglu · 1980
An information system contains a vast number of logical statements in addition to data. These logical statements are used to control the retrieval and use of data for applications. Systems Design is the process of translating the information requirements of an organization to a set of logical statements which operate on the observed data to generate new data. The 'derived data' generated in this fashion could actually be used for decision support or stored back in the data base for future use; however, the storage is rare since it can always be regenerated using the logical statements. The logical statements are often expressed using a procedural programming language mostly aided by Data Base Management Systems which accomplish to decouple the physical data structure and the application system designer's logical view of it. This feature, called 'data independence,' has a number of advantages such as: