| Data warehousing helps to provide information on the | | | | Data warehouses are vast, due to the hundreds of |
| techniques involved in designing, building, maintaining | | | | gigabytes of transactions. As a result, subsets, |
| and retrieving information, from a data warehouse. A | | | | known as 'data marts,' are often designed for just |
| data warehouse is premeditated and produced to | | | | one department or product line. |
| support the decision-making process in an | | | | The data warehouse system serves as an influential |
| organization. The data that is obtained from the | | | | and necessary platform, to merge the data from the |
| production databases are copied in the data | | | | old and new applications. Rules can also be |
| warehouse, so that queries can be answered, | | | | transferred to the data warehouse, with very little |
| without hindering the consistency of the production | | | | effort. The most important and noteworthy features |
| systems. | | | | of a data warehouse is that it collects, records, filters |
| Data warehousing includes a set of important, new | | | | and provides the basic data, to other organizational |
| concepts and tools that have evolved into a | | | | systems, at various higher levels. |
| technology. This makes it possible to counter the | | | | Essentially, data warehouses are programmed to |
| problems involved in providing all the key information, | | | | perform the summarization and pre-defining of the |
| to the concerned people. | | | | analysis, to automatically generate summary reviews. |
| This field has evolved from the incorporation of a | | | | Data warehousing helps to analyze information for |
| number of experiences and technologies, over the | | | | the users. This system is very useful for providing |
| last two decades. Data warehousing is a | | | | collective information to the users. Data warehousing |
| well-organized and resourceful method of managing | | | | systems have been created to support a variety of |
| and reporting data from a variety of sources, | | | | analysis, including elaborate queries on large amounts |
| non-uniform and scattered, throughout the company. | | | | of data that require extensive searching. |