DAVID: NASA's heterogeneous distributed database management system

The DAVID (Distributed Access View Integrated Database) system is a heterogeneous distributed database management system developed by NASA. The goal of the project is to integrate current and future NASA data systems into one that can be accessed through several layers of user interfaces with one query language. A description is given of the database aspect of the DAVID project. Data model, system architecture and implementation issues are addressed. A sample astrophysics database is used throughout to illustrate the concept of the DAVID system.<
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