PRTV (Peterlee Relational Test Vehicle) was the world's first relational database management system that could handle significant data volumes--it was really a relational query system and had very powerful query facilities, but very limited update facility and no simultaneous multiuser facility.
PRTV (Peterlee Relational Test Vehicle) was the world's first relational database management system that could handle significant data volumes. It was a relational query system with powerful query facilities, but very limited update facility and no simultaneous multiuser facility.