Luján-Mora, S., Trujillo, J., Song, I.Y.: A UML profile for multidimensional modeling in data warehouses. Data Knowl. Eng. 59(3), 725–769 (2006)Luján-Mora, S., Trujillo, J., Song, I.Y.: A UML profile for multidimensional modeling in data warehouses. Data & Knowledge ...
In this work, we present a new compression method, called BTC, for multidimensional data warehouses. Several methods have been proposed in the literature that can compress the data such as the Bitmap method. The main purpose of BTC is to improve the access time on data. This technique is ...
Multidimensionel dataanalyse er også mulig, hvis der anvendes en relationel database. Derved ville det kræve at forespørge data fra flere tabeller. Tværtimod har MOLAP alle mulige kombinationer af data, der allerede er lagret i et multidimensionelt array. MOLAP kan få direkte ...
When using a shared dimension, the system consistently interprets attributes; hence rollups across data marts are possible and consistent. When a warehouse is provided data from multiple sources, a shared dimension is typically (but not always) built from multiple source structures. Image: EPM confo...
However, to the best of our knowledge, conducting multidimensional benchmarking in data warehouses has not been explored from a technical efficiency perspective. In this paper, we formulate benchmark queries in the context of data warehousing and business intelligence, and develop algorithms to answer...
This type of database is usually structured in an order that optimizes OLAP and data warehouse applications. Advertisements Related Terms Online Analytical Processing Data Data Warehouse (DW) Data Warehouse Appliance Data Storage MultiValue Database...
Data warehouseQuality factorsMetricsMultidimensional modelMetrics have been popularly used to guide designers to develop quality data models. Researchers have proposed metrics for multidimensional models for data warehouses. These metrics need to be empirically validated to prove their practical utility. This...
The chapter demonstrates how to use Microsoft Excel to access the OLAP cube and perform simple calculations and adding charts to the cube. By doing so, they meet the goals of the book, to provide a complete end-to-end demonstration of building a scalable data warehouse using Data ...
1) multidimensional data warehouse 多维数据仓库例句>> 2) multi-data warehouse 多数据仓库3) The maintenance of Data Warehouse 数据仓库的维护4) Data warehouse maintenances 数据仓库维护5) multi-tier data warehouse 多层数据仓库 例句>>
The framework is based on UML profiles and presents to decision-makers a graphical tool for modelling their strategic visions in order to build the system-to-be. Besides, the proposal allows for dealing with data historization and metadata in the generated multidimensional model to perform properly...