System and method for storing and retrieving a field of a user defined type outside of a database store in which the type is defined
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United States of America Patent
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Jul 27, 2010
Grant Date -
Jan 10, 2008
app pub date -
Sep 26, 2007
filing date -
Oct 23, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In a database system that supports user-defined types, one or more fields of a user-defined type may be designated as containing data that is to be stored as a file outside of a database store, separate from the other fields of the type which are stored within the database. Instead of being stored within the database, the data in such a designated field of an instance of the user-defined type is stored as a file within the file system of a computer. Applications are provided “out of band” access, via the file system of the computer, to the file in which the data of such a field is stored outside the database store. A component of the system intercepts file system open requests and checks security against the database store before allowing the open request to proceed. The component also notifies the database when file system close requests are received.
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