ADMS 2511 Chapter Notes - Chapter 4: Data Redundancy, Data Security, Data Degradation

• School: York University
• Department: Administrative Studies
• Course: ADMS 2511
• Professor: all

Document Summary

Data are scattered throughout organizations and collected by many individuals using various methods and devices. Data come from multiple sources: internal sources, personal sources, and external sources. Data are also subject to data rot. Data security, quality, and integrity are critical. Legislation can affect data archiving requirements: pipeda jan 1, 2004. A database management system (dbms) is a set of program that provides users with tools to add, delete, access, and analyze data stored in one location. An organization can access the data by using query and reporting tools that are part of the dbms or by using application program specifically written to access the data. Data can be effectively managed centrally- increases data accessibility. Security over data can be more consistent (data inconsistency: various copies of the data do not agree). More complex (and costly) to set up and maintain. Complex structures may be slower for processing high volume periodic transaction updates.