TQuel Paper: Implementing Temporal Operators in Postgres

With UPDATE/DELETE FOR PORTION OF looking like it will land in Postgres 19, I’ve been thinking about next steps . I read a very helpful paper on temporal relational algebra last May by Richard Snodgrass. Here are some notes on it. The paper was “An Overview of TQuel”. It’s Chapter 6 in Temporal Databases: Theory, Design, and Implementation from 1993. TQuel was an extension to Quel, the query…