QUEL
QUEL (Query Language) is a high-level, declarative, tuple-relational calculus-based query language developed for the Ingres relational database management system. It was one of the earliest relational database query languages, providing a powerful alternative to SQL during the early days of…
Key facts
- First appeared
- 1974
- Category
- technology
- Problem solved
- QUEL was created to provide a high-level, declarative language for querying and manipulating data in relational databases, a novel approach at the time compared to the procedural navigation required by hierarchical and network database models. It aimed to offer a more intuitive and mathematically sound way for users to interact with relational data.
- Platforms
- Other platforms supported by Ingres RDBMS, UNIX-like operating systems (historically with Ingres)