AFM241 Chapter Notes - Chapter 5: Data Integrity, Database, Data Redundancy

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Library: a collection and organization of sources of knowledge. Database: a collection and organization of sources of information. Data: facts about people, places, things, or events. Information: what you get when you process the data into something useful (summary tables, bar graphs, etc). The processed data are in fact the basis for idea formation. Production database: a production database is used mainly to track data about frequent and complex transactions. Transaction: involves one or multiple actions related to reading from or writing to a database. Decision support system database (dss): a dss database focuses on information requirement s instead of the transaction requirement characteristics of product databases. It offers extensive information generation and processing, as well as management capabilities. Datawarehouses: storage facilities dedicated to processing existing data taken from production databases into useful information. Metadata: data about the data stored in a database, stored i n a data dictionary.

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