db_intro - Introduction to Databases Brian Wright...

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Unformatted text preview: Introduction to Databases Brian Wright University of South Alabama University of South Alabama - CIS 250 2 Databases Used to store electronic information Referred to as secondary storage We will discuss Benefits for using databases Database Management Systems Different database structural formats University of South Alabama - CIS 250 3 Benefits of Databases Data Sharing information in one department can be readily shared with other departments Security users can be given passwords and/or access only to the kind of information they need to know while containing all of the information in the same database file Data Redundancy fewer files are necessary; data is stored only once and in one location. This reduces the storage space needed. Data Integrity Changes made in the database will update all occurrences University of South Alabama - CIS 250 4 Database Management Systems DBMS- special software that allows you to create, modify, and gain access to a database data dictionary- contains a description of the structure of the data used in the database; defines field names, type of data that can go into the field,...
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db_intro - Introduction to Databases Brian Wright...

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