| A | B |
| Model | A abstraction or an approximation that is used to represent reality. |
| Narrative model | Is based on words, spoken or written. |
| Physical model | A tangible representation of reality. |
| Mathematical model | An arithmetic representation of reality. |
| Schematic model | A graphic representation of reality. |
| Input | The activity of gathering and capturing raw data. |
| Processing | Converting or transforming data into useful outputs. |
| Output | Useful information, usually in the form of documents and/or reports. |
| Technology infrastructure | A computer-based information system that consists of the shared IS resources that form the foundation of the information system. |
| Database | An organized collection of facts and information. |