Declared Foreign and Primary Keys in RDM Embedded® SQL
Posted by Randy Merilatt on March 05, 2012
Network model databases have been viewed as strictly non-relational and outdated. But in the 1990s when the SQL standard incorporated support for declared foreign keys to represent inter-table relationships, the gap between the relational and the network model representation of a database narrowed. This was exploited by Raima in RDM Server (RDMs) with the introduction of the create join statement that allowed an SQL foreign and primary key relationship to be explicitly mapped into a network model set.
