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Database Systems Class Notes

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Database Systems Class Notes OVERVIEW OF DATABASE SYSTEMS  Data management, which focuses on data collection, storage and retrieval, constitutes a core activity for any organization.  To ge... nerate relevant information efficiently you need quick access to data (raw facts) from which the required information is produced.  Efficient data management requires the use of a computer database. A database is a shared, integrated computer structure that houses a collection of: - i. End-user data i.e. raw facts of interest to the user. ii. Meta-data i.e. raw facts of interest to the user iii. Meta data i.e. data about data through which the data is integrated. The Meta data provides a description of the data characteristics and the set of relationships that link the data found within the database. The database resembles a very well organized electronic filing cabinet in which powerful software referred to as DBMS helps manage the cabinet’s contents. [Show More]

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