| Abbreviation | Definition |
|---|---|
| PCMD | Primary Care Mortality Database |
| PCOD | Predicted Crystallography Open Database |
| PD | Pure Data |
| PDB | program data base |
| PDE | Parallel database extensions |
| PDID | Protein Drug Interaction Database |
| PDMS | Poverty Database Monitoring System |
| PDQ | Parallel Database Query |
| PDSN | Public Data Switched Network |
| PDT | Program Database Toolkit |
| PEDE | Paediatric Economic Database Evaluation |
| PEMS | Predict, Extract, Match, and Search |
| PERD | Process Equipment Reliability Database |
| PERL | Practical Extension and Report Language |
| PEST | Political, economic, socio-cultural and technological |
| PEV | Pointer to Entity Variable |
| PFAD | Protection From Abuse Database |
| PFD | Protein Folding Database |
| PFDS | Precipitation Frequency Data Server |
| PFGD | Phytophthora Functional Genomics Database |