In this demo we present X-Time, a prototype for managing schema versioning in relational data warehouses, specifically oriented to support the formulation of cross-version queries, i.e., queries whose temporal horizon spans multiple versions. The key issue to increase querying flexibility is the introduction of augmented schemata that properly extend previous schema versions.
M. Golfarelli, S. Rizzi (2007). X-Time: Schema Versioning and Cross-Version Querying in Data Warehouses. s.l : IEEE.
X-Time: Schema Versioning and Cross-Version Querying in Data Warehouses
GOLFARELLI, MATTEO;RIZZI, STEFANO
2007
Abstract
In this demo we present X-Time, a prototype for managing schema versioning in relational data warehouses, specifically oriented to support the formulation of cross-version queries, i.e., queries whose temporal horizon spans multiple versions. The key issue to increase querying flexibility is the introduction of augmented schemata that properly extend previous schema versions.File in questo prodotto:
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