| CONVERT | ⊕ 1976 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| DATATRIEVE-11 | ⊕ 1976 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other DPLs | ⊕ United States | DEC Query language for PDP-11 |
| NUL | ⊕ 1976 | ↓ ↑ ⊕ Business Data Processing | ⊕ Network DB | ⊕ Belgium | Network database language |
| PLAIN | ⊕ 1976 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| SEQUEL 2 | ⊕ 1976 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | 2nd version of SEQUEL | |
| WATBOL | ⊕ 1976 | ↓ ↑ ⊕ Business Data Processing | ⊕ Canada | Waterloo student's COBOL |