| Abstract
|
We are currently developing a database imp … We are currently developing a database implementation to support the temporal semantics of medical data for the T-HELPER physician workstation, a data-management and advice system for protocol-based care of patients who have HIV disease. To understand the requirements of a temporal querying language for the database, we have analyzed the types of temporal predicates found in the clinical-trial protocols. We have extended the standard relational data model with new temporal representations and operations to support these querying requirements. We define a history as a relational table that uses real-world time to store both instant-based events and interval-based states. We also develop a set of temporal operations on events and states as the basis for creating a relational algebra for histories. We use the set of algebraic operators to execute an extended SQL that supports protocol data-management requirements. rts protocol data-management requirements.
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| Address
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Washington, D.C. +
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| Author
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Amar K. Das +,
Samson W. Tu +,
Gretchen P. Purcell +,
Mark A. Musen +
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| Bibtype
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techreport +
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| Institution
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Knowledge Systems, AI Laboratory +
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| Key
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KSL-92-24 +
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| Modification dateThis property is a special property in this wiki.
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1 May 2009 14:05:48 +
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| Number
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KSL-92-24 +
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| Tag
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Computer science +
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| Title
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An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems +
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| Tr id
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KSL-92-24 +
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| Year
|
1992 +
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| Categories |
Technical Report,
Publication,
KSL Technical Report
|
