KSL-92-24 + redirect page
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems + Has identifier
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems + Ksl tr id
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems + Number
| An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems |
Bibtype
techreport
Has publishing details
1992
Has title
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems
Has where published
KSL-92-24
Has year
1992
Title
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems
Year
1992
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.
Address
Washington, D.C. +
Author
Amar K. Das and Samson W. Tu and Gretchen P. Purcell and Mark A. Musen +
Has author
Amar K. Das and Samson W. Tu and Gretchen P. Purcell and Mark A. Musen +
Has identifier
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems +
Institution
Knowledge Systems, AI Laboratory +
Ksl tr id
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems +
Number
An Extended SQL for Temporal Data Management in Clinical Decision-Support Systems +
Process note
YES +
Categories KSL Technical Report +, Publication +, Technical Report +
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