| Abbreviation | Definition |
|---|---|
| AOMD | Algorithm Oriented Mesh Database |
| APCD | All Payer Claims Databases |
| APD | Antimicrobial Peptide Database |
| APED | Astrophysical Plasma Emission Database |
| APLD | Anti Predatory Lending Database |
| APOS | Action Process Object Schema |
| APPCD | All-Payer, All-Provider Claims Database |
| APT | Auto-Placement Technology |
| AQD | Aviation Quality Database |
| ARD | Anthropology Review Database |
| ARFF | Attribute-Relation File Format |
| ARIA | Annotation And Retrieval Integration Agent |
| ARIES | Algorithms for Recovery and Isolation Exploiting Semantics |
| ARO | Attribute Resolution Order |
| ASD | A Secure DBMS |
| ASD | Action Semantic Description |
| ASD | Active System Development |
| ASD | Atomic Spectra Database |
| ASDC | Advanced Symphony Database Connector |
| ASDF | A Secure Distributed Filespace |