1. CAPE INFORMATION TECHNOLOGY – Unit 2
INFORMATION MANAGEMENT
Unit 2 SO 1 - 3

2. What is Information Management?
Information management (IM) is the collection and management of information from one or more sources and the distribution of that information to one or more audiences. This sometimes involves those who have a stake in, or a right to that information. Management means the organization of and control over the structure, processing and delivery of information. In short, information management entails organizing, retrieving, acquiring and maintaining information.

3. Popular Definitions of IM
the procedure of collecting data and processing, presenting and communicating information en.wikibooks.org/wiki/SA_NCS_Computer_Application_Technology:Glossary
The provision of relevant information to the right person at the right time in a usable form to facilitate situational understanding and decision making. It uses procedures and information systems to collect, process, store, display, and disseminate information. (FM 3-0)
The planning, budgeting, manipulating, and controlling of information throughout its life cycle.
The entire process of defining, evaluating, protecting, and distributing data within an organization

4. STEPS IN INFORMATION MANGEMENT

5. Why is Info. Management important?
Helps to ensure consistency in data recording
Helps to ensure effective functioning of organization
Assists in timely decision making by managers
Increases the understanding of situation in which decisions needs to be made
Increases the reliability of data used in decision making
Adherence to the steps/procedures increases accuracy in data management/storage

6. What are the benefits achieved from IM?
Improves decision making when data is accurate
Improves information access and protects against improper use
Reduce wastage – having had the right info to make the right decision by the right person at the right time
Review previous decision or data to assist with future decisions
Gives competitive advantage
Trust worthiness to stakeholders is increased

7. What are the dangers of improper IM?
Inaccurate data being used to make decision
Information being passed to unauthorised persons
Can lead to propaganda and other misuse of information
Loss of trust in IT systems by stakeholders
Loss on income, loss of privacy and exposure of organizational operations to unathorised persons

8. Key Terms in IM Fields .. Data types Records Tables Files
Database – types of database: Hierarchical, Relational, Network
Database Management System

9. How are files and Databases useful in organizations?
Store information
Organize information
Search for information
Retrieval of information
Eliminate redundancies
Supports Data Mining Activities
Support development of Data Marts
Supports the creation and maintenance of Data Warehouses
Problems with Data Mining
Issues relating to Data Mining
Data Marts
Data Warehouses

10. History of Data Storage
Trace the history and development of Data Storage and its devices (medias)
History of Data Storage Devices
Punched Card 1725
Magnetic Tape 1950s
Cassette Tape
Punched Tape 1846
Magnetic Drum
Floppy Disk 1969
Selectron tubes 1946
Compact Disc 1979s – 80s
Hard Disk

11. History of Storage Devices
Holographic Versatile Disk
DVD R
DVD
Flash Cards

12. Volumes of data to be stored Compression Utilities
Formats of Data
Text Based ..
MP3, MP4
Multimedia – contains music, video, movies, animation, graphics, etc.
Volumes of data to be stored
Compression Utilities

13. File Access Methods Random Access
Sequential Access - that a group of elements (e.g. data in a memory array or a disk file or on a tape) is accessed in a predetermined, ordered sequence. Sequential access is sometimes the only way of accessing the data, for example if it is on a tape
Random Access
(sometimes called direct access) is the ability to access an arbitrary element of a sequence in equal time
What are the advantages and disadvantages of both methods of file access?

14. Other Issues:
SPEED