Method and system for describing and exchanging data between heterogeneous database systems with data converted by the receiving database system
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United States of America Patent
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Jan 11, 1994
Grant Date -
N/A
app pub date -
Mar 26, 1990
filing date -
Mar 26, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention establishes the context in which data exchanged between dissimilar relational database management systems can be mutually understood and preserved. The invention accomplishes this by establishing layers of descriptive information which isolate machine characteristics, levels of support software, and user data descriptions. Optimized processing is achieved by processing the different descriptor levels at different times during the development and execution of the database management systems. Minimal descriptive information is exchanged between the cooperating database management systems. For systems which match, data conversion is completely avoided. For systems which do not match, data conversion is minimized.
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