Temporal Queries in OLAP
نویسندگان
چکیده
منابع مشابه
Representing Temporal Data in Non-Temporal OLAP Systems
Multidimensional data warehouses and OLAP systems do not provide adequate means for dealing with changes in dimension data, changes appearing frequently in dynamic application areas as current business systems. As data warehouses and OLAP tools serve as decision support systems they have to reflect such changes. Temporal data warehouses propose sophisticated modelling tools for covering any cha...
متن کاملEfficient evaluation of partially-dimensional range queries in large OLAP datasets
In light of the increasing requirement for processing multidimensional queries on OLAP (relational) data, the database community has focused on the queries (especially range queries) on the large OLAP datasets from the view of multidimensional data. It is well-known that multidimensional indices are helpful to improve the performance of such queries. However, we found that much information irre...
متن کاملSM4MQ: A Semantic Model for Multidimensional Queries
On-Line Analytical Processing (OLAP) is a data analysis approach to support decision-making. On top of that, Exploratory OLAP is a novel initiative for the convergence of OLAP and the Semantic Web (SW) that enables the use of OLAP techniques on SW data. Moreover, OLAP approaches exploit different metadata artifacts (e.g., queries) to assist users with the analysis. However, modeling and sharing...
متن کاملFeature-based recommendation framework on OLAP
The queries in Online Analytical Processing (OLAP) are user-guided. OLAP is based on a multidimensional data model for complex analytical and ad-hoc queries with a rapid execution time. Those queries are either routed or on-demand revolved around the OLAP task. Most such queries are reusable and optimized in the system. Therefore, the queries recorded in the query logs for completing various OL...
متن کاملUsability-based caching of query results in OLAP systems
In this paper we propose a new cache management scheme for online analytical processing (OLAP) systems based on the usability of query results in rewriting and processing other queries. For effective admission and replacement of OLAP query results, we consider the benefit of query results not only for recently issued queries but for the expected future queries of a current query. We exploit sem...
متن کامل