RSM427H1 Lecture Notes - Lecture 1: Chief Information Officer, Database, Wide Area Network
Document Summary
Local area network lan: wide area network wan, wireless network, hardware, real estate. Information: ownership and classification, each information system and the information should be assigned to a senior manager to own, owner accountable for information reliability including classifying information based on risk and affording the respective protection. Internal controls and security measures: policies, procedures, activities that protect the integrity and confidentiality of information. Processing modes online input and update online input and batch update batch input and periodic update. Database: a collection of files used in related applications, database can be shared by related applications, requires a database management system, advantages of database management systems, data redundancy reduced, (cid:862)data independence(cid:863, data can be effectively managed centrally. Increases data accessibility: disadvantages of database management systems, more complex and costly to set up and maintain, complex structures may be slower for processing high volume periodic transaction updates.
