Computer Science – Information Theory
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aipc..283..444j&link_type=abstract
The earth and space science information system (ESSIS). AIP Conference Proceedings, Volume 283, pp. 444-453 (1993).
Computer Science
Information Theory
Information Theory And Communication Theory
Scientific paper
The management of large databases can be a time consuming and tedious task without tools to automate the process. In order to facilitata the process, a database design philosophy which is consistent with application objectives must be adopted. The Planetary Plasma Interactions (PPI) Node of the Planetary Data System (PDS) provides users with a software application which allows for rapid retrieval (for examination or extraction) of datasets which are distributed and which may exist in more than one location simultaneously. In addition, the application software, which interacts with both a local and a centralized database management system (dbms) via a client-server architecture, also is distributed. The basic problem lies in keeping all of the information current in a dynamic data environment so that the application software, regardless of its location, can access any data in the system with the greatest possible throughput. In addressing this problem the PDS/PPI Node has adopted a standardized architecture [2] and has chosen to package data management information with the data themselves as a set of detached relational flatfiles. At the PDS/PPI Node automated dbms tools are being developed which update both local and central management systems by using the information provided along with the datasets. This information can be stored in any relational database system or it can be accessed and manipulated outside of a dbms. Science data are not maintained under direct dbms control.
Joy Steven P.
King Todd A.
Walker Raymond J.
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