ITM 102 Chapter 6: Chapter 6.doc

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 102
• Professor: Vikraman

Document Summary

Opening case: can hp mine success from an enterprise data warehouse: hp"s experience illustrates the importance of data management and databases systems for business. 6. 1; organizing data in a traditional file environment: effective information systems provide users with accurate, timely, and relevant information. Accurate information is free of errors: a computer system organizes data in a hierarchy that starts with bits and bytes and progresses to fields, records, files, and databases. (bit: the smallest unit of data a computer can handle. A group of bits is called a byte; represents a single character, which can be a letter, a number, or another symbol. File: a group of records of the same type: a record describes an entity, an entity is a person, place, thing or event about which we store and maintain information. Each characteristic or quality describing a particular entity is called an attribute.