Algorithms for a persistent heap
Malcolm Atkinson, Ken Chisholm, Paul W. Cockshott, Richard Marshall · Software Practice and Experience · 1983
Abstract PS‐Algol is a dialect of Algol for the programming of problems that would normally require a database management system. It supports a persistent heap, and an associative store; it has embedded within the language features to support tasks normally carried out by filing systems or database management systems.