| Data objects - | (Software Engineering) an input or output that is user visible |
| Data warehouse - | (Software Engineering) a large, independent database that has access to databases that serve many different applications that are required by a business |
| Debugging - | (Software Engineering) the activity associated with finding and correcting an error or defect - a lack of conformance to requirements found in the software after delivery to the customer |
| Defect amplification - | (Software Engineering) when a defect is introduced early in the software process and remains undetected, it often is amplified into multiple defects later in the software process |
| Defect removal efficiency (DRE) - | (Software Engineering) a nondimension ratio (between 0 and 1) that provides an indication of the degree to which errors are removed from software before it is released to end-users |
| Design - | (Software Engineering) an activity that translates the requirements model into a more detailed model that is the guide to implementation of the software |
| Design specification - | (Software Engineering) a document that describes the design |
| Design walkthrough - | (Software Engineering) a formal technical review of the design |
| Detail design - | (Software Engineering) a design activity that focuses on the creation of an algorithm |
| Documentation - | (Software Engineering) descriptive information |