The TempIS Project: Performance Analysis of Temporal Queries
Temporal databases maintaining history data on line extend conventional databases with capabilities for historical queries and rollback operations. To analyze the performance of temporal queries on the database using various access methods, the authors propose a model consisting of four transformati...
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| creator | Ahn, Ilsoo Snodgrass, Richard |
| description | Temporal databases maintaining history data on line extend conventional databases with capabilities for historical queries and rollback operations. To analyze the performance of temporal queries on the database using various access methods, the authors propose a model consisting of four transformations through a series of intermediate expressions based on characteristics of database/relations and storage devices. They validate the model by comparing the I/O cost estimated from the analysis using the model with the actual cost measured from a prototype temporal DBMS. Since conventional databases are subsets of temporal databases, the model can also be used to analyze the performance of conventional databases. Keywords: Transformations(Mathematics); Access; Data storage systems; Computer files. |
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To analyze the performance of temporal queries on the database using various access methods, the authors propose a model consisting of four transformations through a series of intermediate expressions based on characteristics of database/relations and storage devices. They validate the model by comparing the I/O cost estimated from the analysis using the model with the actual cost measured from a prototype temporal DBMS. Since conventional databases are subsets of temporal databases, the model can also be used to analyze the performance of conventional databases. 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To analyze the performance of temporal queries on the database using various access methods, the authors propose a model consisting of four transformations through a series of intermediate expressions based on characteristics of database/relations and storage devices. They validate the model by comparing the I/O cost estimated from the analysis using the model with the actual cost measured from a prototype temporal DBMS. Since conventional databases are subsets of temporal databases, the model can also be used to analyze the performance of conventional databases. Keywords: Transformations(Mathematics); Access; Data storage systems; Computer files.</description><subject>ACCESS</subject><subject>Computer Programming and Software</subject><subject>COSTS</subject><subject>DATA BASES</subject><subject>DATA STORAGE SYSTEMS</subject><subject>INPUT OUTPUT PROCESSING</subject><subject>INTERROGATION</subject><subject>MATHEMATICAL MODELS</subject><subject>PERFORMANCE TESTS</subject><subject>SYSTEMS ANALYSIS</subject><subject>TRANSFORMATIONS(MATHEMATICS)</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1987</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZLAJyUhVCEnNLfAMVggoys9KTS6xUghILUrLL8pNzEtOVXDMS8ypLM4sVshPA6vLL0rMUQgsTS3KTC3mYWBNS8wpTuWF0twMMm6uIc4euiklmcnxxSWZeakl8Y4ujoYWFsamJsYEpAG0VCxK</recordid><startdate>19870811</startdate><enddate>19870811</enddate><creator>Ahn, Ilsoo</creator><creator>Snodgrass, Richard</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>19870811</creationdate><title>The TempIS Project: Performance Analysis of Temporal Queries</title><author>Ahn, Ilsoo ; Snodgrass, Richard</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_ADA1883543</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1987</creationdate><topic>ACCESS</topic><topic>Computer Programming and Software</topic><topic>COSTS</topic><topic>DATA BASES</topic><topic>DATA STORAGE SYSTEMS</topic><topic>INPUT OUTPUT PROCESSING</topic><topic>INTERROGATION</topic><topic>MATHEMATICAL MODELS</topic><topic>PERFORMANCE TESTS</topic><topic>SYSTEMS ANALYSIS</topic><topic>TRANSFORMATIONS(MATHEMATICS)</topic><toplevel>online_resources</toplevel><creatorcontrib>Ahn, Ilsoo</creatorcontrib><creatorcontrib>Snodgrass, Richard</creatorcontrib><creatorcontrib>NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF COMPUTER SCIENCE</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Ahn, Ilsoo</au><au>Snodgrass, Richard</au><aucorp>NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF COMPUTER SCIENCE</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>The TempIS Project: Performance Analysis of Temporal Queries</btitle><date>1987-08-11</date><risdate>1987</risdate><abstract>Temporal databases maintaining history data on line extend conventional databases with capabilities for historical queries and rollback operations. To analyze the performance of temporal queries on the database using various access methods, the authors propose a model consisting of four transformations through a series of intermediate expressions based on characteristics of database/relations and storage devices. They validate the model by comparing the I/O cost estimated from the analysis using the model with the actual cost measured from a prototype temporal DBMS. Since conventional databases are subsets of temporal databases, the model can also be used to analyze the performance of conventional databases. Keywords: Transformations(Mathematics); Access; Data storage systems; Computer files.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | DTIC Technical Reports |
| subjects | ACCESS Computer Programming and Software COSTS DATA BASES DATA STORAGE SYSTEMS INPUT OUTPUT PROCESSING INTERROGATION MATHEMATICAL MODELS PERFORMANCE TESTS SYSTEMS ANALYSIS TRANSFORMATIONS(MATHEMATICS) |
| title | The TempIS Project: Performance Analysis of Temporal Queries |
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