| Customer - | (Software Engineering) the person or group that has requested the software and will be paying the bill for its development |
| Cyclomatic complexity - | (Software Engineering) a measure of the logical complexity of an algorithm, used in white-box testing |
| Data design - | (Software Engineering) an activity that translates the data model developed during analysis into implementable data structures |
| Data dictionary - | (Software Engineering) a database that contains definitions of all data items defined during analysis; see also, Requirements dictionary |
| Data flow diagram (DFD) - | (Software Engineering) a modeling notation that represents a functional decomposition of a system |
| Data modeling - | (Software Engineering) an analysis method that models data objects and their relationships |
| 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 |