What is a Data Warehouse?
Word Count: 139A data warehouse is not an application; rather a tool that allows authorized individual’s access in order to conduct performance-monitoring functions. Building a data warehouse involves creating a storage system that boasts large amounts of relevant data. The data is then stored in a definite manner so that one can maximize its convertibility into useful information. Thus, data warehouse consolidates data from varied sources or multiple databases in-house, as well as from external sources.
Building a data warehouse is a complex process and it involves a number of complicated steps. The first step toward building a data warehouse is to implement data warehouse architecture. Once the architecture is ready the data-warehousing architect locates all data elements necessary to support the data warehouse, followed by building of a dimensional model. Populating fact and dimension tables into the model is often time-consuming.
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