Difference between revisions of "H-PRIMA"
From Schema Evolution
(→Experiment Data Set) |
(→Overview) |
||
| Line 1: | Line 1: | ||
== Overview == | == Overview == | ||
| − | H-PRIMA is an efficient incarnation of [[PRIMA]], which supports the same features of management and querying of transaction-database systems under schema evolution. The original PRIMA is based on XML DB that executes XQuery queries on XML data, which is not very efficient at the current state of art. In H-PRIMA, we instead employ RDBMS-based query execution engine, to improve the performance. We also address the problem of temporal coalesce for the broken history at schema changes. | + | H-PRIMA is an efficient incarnation of [[PRIMA]], which supports the same features of management and querying of transaction-database systems under schema evolution. The original PRIMA is based on XML DB that executes XQuery queries on XML data, which is not very efficient at the current state of art. In H-PRIMA, we instead employ RDBMS-based query execution engine, to improve the performance. We also address the problem of temporal coalesce for the broken history at schema changes. The project is still in-progress and we post some tools data sets used for the experiment in this page. |
== Experiment Data Set == | == Experiment Data Set == | ||
Revision as of 17:18, 13 June 2008
Overview
H-PRIMA is an efficient incarnation of PRIMA, which supports the same features of management and querying of transaction-database systems under schema evolution. The original PRIMA is based on XML DB that executes XQuery queries on XML data, which is not very efficient at the current state of art. In H-PRIMA, we instead employ RDBMS-based query execution engine, to improve the performance. We also address the problem of temporal coalesce for the broken history at schema changes. The project is still in-progress and we post some tools data sets used for the experiment in this page.
Experiment Data Set
- Data generator for employee DB under schema evolution: PrimaEmpBenchmarkDataGen.jar (version 0.01)
- XML data (Warning: simple left-click on these files could take forever - download them with right-click.)
- emp1h-vdoc.xml (0.9MB): data for 1,000 employees over evolving schema of five year periods. generated from H-Tables for the purpose of performance comparison between XML DB and RDBMS.
- emp10h-vdoc.xml (8.9MB): same data with 10,000 employees
- emp100h-vdoc.xml (89.2MB): same data with 100,000 employees
