Analysis of Database Management and Information Retrieval Systems

992 Words4 Pages
1. Functions of a Database Management System Database Management System (DBMS) Information Retrieval System (IRS) • Storage, Access And Provide DBMS provide services such as storage, access and update data in the database. • Acquisition of the necessary and appropriate documents. • Provide Free Catalog DBMS provides a catalog that contains information about the data and catalogs that can be accessed by users. • Preparation and representation of the content of those in documents. • Supports Transactions The transaction is a unit of work that contains several commands up-date the data. • Coding of the content indicators. • Concurrency control Database Management System (DBMS) to ensure accurate updated database correctly if many users update the database simultaneously. • Organized storage of those documents and their indicators in separate files. • Recovery From Failure System Database Management System (DBMS) provides facilities to restore the database in the event of damage • Development of operational search strategies. • Authorization Services The facility is to ensure that the right people are allowed to achieve its data. • Physical dissemination of the retrieval result. • Utility Services Facilities for maintaining databases through data editing, deletion of records, build new files and so on. • Integrity Services Change data must follow the constraints or conditions that have been determined. This facility is to maintain data consistency. 2. 0 Differences between
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