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

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.

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) https://rdl.train.army.mil/soldierPortal/atia/adlsc/view/public/7422-1/fm/3-13/glos.htm;jsessionid=MvnFH3yTHgWVsbGdH1zbk0Jyx82JCpBghJJlnpvwQhY51vkgrgQQ!74318302 The planning, budgeting, manipulating, and controlling of information throughout its life cycle. www.stanlake.co.uk/recruitment-candidates/recruitment-glossary.php The entire process of defining, evaluating, protecting, and distributing data within an organization. ... www.storsoftcorp.com/Glossary.htm

STEPS IN INFORMATION MANGEMENT

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

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

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

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

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

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

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

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

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?

Other Issues: SPEED