COMMERCE 2KA3 Chapter Notes - Chapter 6: Text Mining, Call Centre, Web Mining

• School: McMaster University
• Department: Commerce
• Course: COMMERCE 2KA3
• Professor: A L I R M O N T A Z E M I

Document Summary

Effective information systems provide users with accurate, timely, and relevant information. Accurate information is free of errors; information is timely when it is available to decision makers when it is needed. Information is relevant when it is useful and appropriate for the types of work and decisions that require it. Computer systems organize data in a hierarchy starting with bits and bytes and progress to fields, record, files, and databases. Bit: represents the smallest unit of data a computer can handle. Byte: a group of bits, represents a single character which can be a letter, a number, or another symbol. Field: a group of characters becomes a word, or a complete number (cid:523)a person"s name or age) is an example of this. Record: a group of related fields (such as the students name, courses taken, the date, the grade received are a record. File: a group of records of the same type is called a file.