| English | Thesaurus |
| Central Office Data Connecting Facility | CODCF |
| Data Dictionary | DD |
| Data Dictionary | DD (SA, CASE, DB) |
| data dictionary | A database that contains the name, type, range of values, source and authorization for access for each data element in a database. It also indicates which application programs use those data so that when a data structure is contemplated, a list of the affected programs can be generated (May be a stand-alone information system used for management or documentation purposes, or it may control the operation of a database) |
| Data Encryption Standard/Cipher Block Chaining | DESCBC (DES) |
| Data Encryption Standard/Cipher Block Chaining | DES/CBC (DES) |
| Data Facility Distributed Storage Management | DFDSM (IBM) |
| Distributed Management Data Facility | DMDF (DCE, DME) |
| Extended Data Message | EDM |
| Local Access Data Transport | LADT |
| Message Protocol Data Unit | MPDU (PDU) |
| PPP Serial Data Transport Protocol | SDTP (PPP, RFC 1963) |
| Short Data Message | SDM |
| TExt DAta eXchange | TEDAX (protocol, MacOS) |
| Transport Protocol Data Unit | TPDU (OSI, OSI/RM, PDU, ICC) |
| Transport Service Data Unit | TSDU (OSI, OSI/RM) |
| Triton Data Path | TDP (Intel, Triton, IC) |