期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2011
卷号：2
期号：4Ver 2
出版社：Ayushmaan Technologies
摘要：As information systems and technology continue to revolutionize the healthcare delivery process, wealth of electronic data are becoming more available and more accessible for analytical purposes. The virtual explosion in data warehousing in many industries, including healthcare, underscores the increased recognition of the potential value of corporate data for purposes of improving managerial decision making. Recently, there has been a realization that enterprise wide data warehousing projects can be daunting and are often fraught with potential budget and timeline overruns. A more pragmatic approach of creating smaller, departmental data marts to address specific business processes or problems has gained popularity in practice. A database, or collection of databases, designed to help managers make strategic decisions about their business. Whereas a data warehouse combines databases across an entire enterprise, data marts are usually smaller and focus on a particular subject or department. Some data marts, called dependent data marts, are subsets of larger data warehouses. In other words a data mart (DM) is the access layer of the data warehouse (DW) environment that is used to get data out to the users. The DM is a subset of the DW, usually oriented to a specific business line or team.
