Computer Based Information System

CBIS – Computer Based Information System – formal systems to be studied, rely on fixed definitions of I/O, processing, content, etc. – built for purpose of solving significant problems in an organization, i.e., they exist to solve business problems.

Components:

1. Transaction Processing System/Electronic Data Processing System/Data Processing System/Accounting Information System (TPS/EDP/DP/AIS) – handles all the daily transactions of the firm; provides little or no Information for managerial decision-making; provides input to all other components of the CBIS; strictly speaking, Accounting Information System has a completely different meaning today, but traditionally this component was called the AIS; today we think of it more as the Transaction Processing component of the CBIS

2. Management Information System (MIS) – provides information for managerial decision-making; helps provide managers with the info they need to run the company.

3. Decision Support System (DSS) – provides information to lend structure to Semi- and Un-Structured problems

4. Expert System (ES) – “an expert in a box”; captures the knowledge of an expert in limited areas and provides this information to the firm so the firm does not have to keep an expert on-site.

5. Executive Information System (EIS) – provides information specifically to executives because they do not do the same job as managers and need different information (than managers) to function effectively; originally part of the MIS, but now a separate component.

6. Office Information Systems (OIS)/Office Automation (OA) – facilitates communication both within and without the office; provides for effective communication at all levels across the organization.

7. Personal and Workgroup Information Systems (P/WGIS) – provides information for empowerment and collaboration within/without the organization.