CCT225H5 Chapter Notes - Chapter 7: Referential Integrity, Hierarchical Database Model, Data Redundancy

• School: UTM
• Department: Communication, Culture and Technology
• Course: CCT225H5
• Professor: Mariam Munawar

Document Summary

Data are raw facts that describe the characteristics of an event. Characteristics for a sales event can include a date, item number, item description, quantity ordered, customer name, or shipping details. Information is data converted into a meaningful and useful context. Information from sales events could include the best-selling item, the worst-selling item, the best customer, or the worst customer. Organizational data and information come at different levels, formats, and granularities. Granularity refers to the extent of detail within the data and information (fine and detailed vs. coarse and abstract). On one end of the spectrum is coarse granularity, or highly summarized data or information. At the other end is fine granularity, or data or information that contains a great amount of detail. If employees are using a supply chain management system to make decisions, they might find that their suppliers are sending data and information in different formats and granularities, and at different levels.