منابع مشابه
Data Mart A Data Warehouse Data Mart B Data
EEcient query processing is a critical requirement for data warehousing systems as decision support applications often require minimum response times to answer complex, ad-hoc queries having aggrega-tions, multi-ways joins over vast repositories of data. This can be achieved by fragmenting warehouse data. The data fragmentation concept in the context of distributed databases aims to reduce quer...
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Data warehouses are in use for more than a decade but companies are still finding it difficult to decide on the approach they should take for successful implementation. Data warehouse architecture plays a major role the successful construction of data warehouse. This paper proposes an approach of constructing local data marts at source and integrating them at enterprise level by creating physic...
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This paper describes a method for developing dimensional models from traditional Entity Relationship models. This can be used to design data warehouses and data marts based on enterprise data models. The first step of the method involves classifying entities in the data model into a number of categories. The second step involves identifying hierarchies that exist in the model. The final step in...
متن کاملObject-Oriented Data Model for Data Warehouse
Data Warehouse is frequently organized as collection of multidimensional data cubes, which represent data in the form of data values, called measures, associated with multiple dimensions and their multiple levels. However, some application areas need more expressive model for description its data. This paper presents the extension of classical multidimensional model to make Data Warehouse more ...
متن کاملConstructing a Data Warehouse for Pharmacokinetic Data
The construction of a warehouse using data from DuPont Pharmaceutical’s Clinical Pharmacokinetics Group with the SAS/Warehouse Administrator product is described herein. Data sources incorporated into the pharmacokinetic warehouse existed in multiple formats (Oracle, Excel, SAS data sets, etc) and were represented by numerous individual files, rather then few large files. In most cases, the da...
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ژورنال
عنوان ژورنال: International Journal of Advanced Research in Science, Communication and Technology
سال: 2021
ISSN: 2581-9429
DOI: 10.48175/ijarsct-v2-i3-312