Database Management Systems

802 Words Feb 26th, 2018 3 Pages
Database management system (DBMS) is an application which interacts with the database at some point in its execution. While, the Information Retrieval System (IR) is the activity of gathering information resources which related to information need from a collection of information resources. Usually, we use metadata or full-text indexing in order to make a search on data requires. Information Retrieval Systems are used to overcome what has been called as "information overload". Many universities and public libraries use Information Retrieval System to provide access to books, journals and other documents. For instance, Web search engines such as Google, Yahoo and Bing, are the most visible IR applications.

There are several functions that DBMS performed to make sure the integrity of the data and data consistency in the database such as data storage, retrieval and update, A user-Accessible catalogue, transactional support, concurrency control services, recovery services, Authorization services, support for data communication, integrity services, services to promote data independence and utility services.

Meanwhile, an information retrieval process begins when a user enters a query into the system. Queries are formal statements of information needs, for example search strings in web search engines. In information retrieval a query does not…
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