ITM 500 Lecture Notes - Lecture 1: Unique Key, Logical Data Model, Database Design

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 500
• Professor: Raymond Moss

Document Summary

Data is ubiquitous (abundant, global, everywhere) and pervasive (unescapable, prevalent, persistent). Database solve many of the problems encountered in data management. It is essential for organizations to survive and prosper. It" i(cid:373)porta(cid:374)t to u(cid:374)dersta(cid:374)d ho(cid:449) data(cid:271)ases (cid:449)ork & i(cid:374)tera(cid:272)t (cid:449)ith other apps as it"s used in almost all modern settings, such as: used in business, research, and administration. The word raw indicates that it has not been processed. Information is the result of processing raw data to reveal meaning. Information can be used as the foundation for decision making. Raw data must be properly formatted for storage, processing, and presentation. Data is the foundation of information, which is the bedrock of knowledge. The data environment must be managed carefully. Data management is a discipline that focuses on the proper generation, storage, and retrieval of data. A database is a shared, integrated computer structure that stores a collection of: End-user data daw facts of interest to the end user.