Evolution of data warehouse and data mining

Data warehouse is the requisite of all present competitive business communities’ i.e. profitable and non-profitable as well as educational institutions where data is complex, huge and dynamic. The technology advent is not in a day but emerging from late 1980s. Data warehouse is a central repository that merges data from various sources: internal & external along with the web data and upholding the traditional database. Data mining is a tool of data warehousing to extract valuable information, choose a right alternate and make predictions to support the managerial tasks. Though the technologies are still not mature however, due to developments in Information Technologies, high performance softwares & tools and artificial intelligence, it is easier to implement these technologies to face the current challenges. The current paper highlights certain journeys of data warehouse, warehousing and data mining in a gradual and comprehensive way.