INFORMATION MODELING OF THE BOOK ACCOUNTING MODULE IN THE LIBRARY
The article discusses methodologies that allow you to describe and visually represent various business processes, their study and getting answers to questions of interest. The increase in the volume and structural complexity of the stored data, the expansion of the circle of users of information systems have led to the widespread use of the most convenient and relatively easy to understand relational (tabular) database management systems (DBMS). To provide simultaneous access to the data of multiple users, often located far enough from each other and from the storage location of the databases, network multi-user versions of databases (DB) based on a relational structure have been created. In one way or another, they solve specific problems of parallel processes, data integrity (correctness) and security, as well as access authorization.