Complex queries for massive data analysis jobs have become increasingly commonplace.
Many such queries contain common subexpressions, either within a single query or among …

In the relational data warehouses, each OLAP query shall involve the fact table. This
situation increases the interaction between queries that can have a significant impact on the …

Analytical queries, like those used in data warehouses and OLAP, are generally
interdependent. This is due to the fact that the database is usually modeled with a …

Today, data feeding warehouses come from devices with high speed and may affect the
selected optimisation techniques such as horizontal data partitioning (HDP). HDP helps …

Small, medium and large companies all face three well-identified problems, precisely:(i) the
data deluge,(ii) the large number of interacted exploratory queries and (iii) the economic …

La technologie de base de données est un environnement adéquat pour l'interaction. Elle
peutconcerner plusieurs composantes du SGBD:(a) les données,(b) les requêtes,(c) les …

Database management systems (DBMS) use external magnetic devices (disks) for the
storage of mass data. In the context of very large databases, the query response time may …

Abstract Many commercial relational Data Base Management Systems (DBMSs) maintain
histograms to approximate the distribution of values in the relation attributes and based on …

Le cache est l'une des composantes principales d'un système de gestion de bases de
données (SGBD). Les SGBD manipulant des bases de données volumineuses comme les …

Considering the increasing demands on manufacturer to take responsibility for their
products in all phases of life, companies are going forward to integrate environmental …