This text investigates the operational mechanics and implementation strategies of SQL/DS, IBM's relational database management system for VM and VSE environments. C. J. Date and Colin J. White, both recognized authorities in database theory and relational systems, provide a comprehensive technical overview of the software. The book serves as a foundational manual for database administrators and systems programmers, detailing how to leverage the relational model within specific IBM mainframe operating systems.

Experts and database professionals recognize this work as a foundational text for understanding early IBM relational database implementations. Readers frequently note the technical density of the prose, which is tailored specifically for practitioners working within the VM and VSE environments.