A Study About Data Warehouse Components Computer Science Essay http://academic-help199.mystrikingly.com/ A data warehouse is collection of resources that can be accessed to retrieve information of an organizations electronically stored data, designed to facilitate reporting and analysis. Definition of the data warehouse focuses on data storage. However, the means to retrieve and analyze data, to extract, transform and load data, and to manage the data dictionary are also considered essential components of a data warehousing system. Many references to data warehousing use this broader context. Thus, an expanded definition for data warehousing includes business intelligence tools, tools to extract, transform and load data into the repository, and tools to manage and retrieve metadata. Data warehousing arises in an organizations need for reliable, consolidated, unique and integrated analysis and reporting of its data, at different levels of aggregation.Data warehouse is an essential element of decision support. It aims at enabling the knowledge user to make better faster daily business decision.
