Describes techniques necessary to use DEC's Rdb technology to face the challenge of the '90s-how to store data to meet an organization's decision support needs and provide users with a common, simple, transparent access to information regardless of where it resides. Contains detailed discussions and analysis of major issues including why a split between operational and informational databases is necessary and how to accomplish it, the lack of data creditability, integration of DSS data and how Rdb technology fits with DSS needs.