MADMAN on the H6000: Data Base Manager for Honeywell 6000 Volume I.
Final technical rept. 14 Jun 76-14 Jun 77,
GENERAL ELECTRIC CO SCHENECTADY N Y RESEARCH AND DEVELOPMENT CENTER
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MADMAN is a multi-access data base management system that exists on both the PDP-11 and the H6000. This report describes the version that exists on the H6000 under GCOS Versions 1G, 2H and 3I. MADMAN is implemented in such a manner that only one copy of the data base manager is resident on the system for each data base that has been opened. That copy can support a maximum of 16 application programs at one time. The application programs are written in FORTRAN using the CALL statement to access the data base manager. Data is transferred core-to-core between the application programs and the data base manager. Three key features of MADMAN are complete implementation of the CODASYL network data base standard except for SELECT UNIQUE MASTER sophisticated concurrency control with automatic rollback in case of data base conflicts and automatic rollbacks of processes that were active when systems crashed. Author
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