Abstract
Abstract : The Defense Mapping Agency, with the help of the Naval Ocean Research and Development Activity, is conducting a large effort to automate production of maps, gazetteers, charts, and similar products. One element of this effort is the creation of a single, controlled source for the placenames used in these products: the Geonames Data Base. Becuase of its size (up to 10 bytes) and user requirements (up to 25 simultaneous users), the Geonames Data Base belongs to a special subset of current data base management practice the Very Large Data Base. From requirements generated earlier by DMA, NORDA, and others, this task surveys commercial data base management systems (DBMS) to determine candidates for the Geonames DBMS. These systems are then ordered by objective and subjective measures of performance to help in selecting the Geonames DBMS. Among the systems which may satisfy the requirements of the Geonames Data Base, two are used widely today and are exceptionally well regarded by current users. These systems are DMS/R and ADABAS.
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