- database management system
- database system
- data compression
- data encrypting standard
- data matrix
- data model
- data processing theorem
- data reduction or data compression
- data snooping
- data structure
- data transmission subsystem
- data type
- data window
- date line
- Davidenko method
- Davidon-Fletcher-Powell algorithm
- Davis theorem
- d-dimensional cocube
- d-dimensional cube
- D-division
- D-domain
- DE200/LE200 numerical ephemeris
- DE200/LE200数值历表
- deadlock
- death rate of a process