The discriminant tells us there are two roots when positive, one root when zero, and no roots when negative. b^2-4ac = (-8)^2-4*3*1 = 52 is positive, so there are two roots. The discriminant is just part of the quadratic equation. The quadratic equation gives us the exact real number roots of any equation in the form ax^2+bx+c=0. The quadratic equation is x = (-b \pm sqrt(b^2-4ac))/(2a), where \pm means that we have two values, one using + (addition) and one using - (subtraction). Let D = b^2-4ac.
RE: what is the difference between database and data w... Database is the place where the data is taken as a base and managed to get avialable fast and efficient access. Dataware house is the place where the application data is managed for analysis and reporting purposes.
For the latest version of Commerce Server 2007 Help, see the Microsoft Web site. The Data Warehouse Analytics System transfers data from a Commerce Server site to a separate database so that a business manager can analyze site data without affecting the performance of the Web site.The Data Warehouse Analytics System gathers data from the following sources:ithin the Data Warehouse, data is stored in SQL Server as tables and in SQL Server Analysis Server as online analytical processing (OLAP) cubes. The Report Preparation DTS task converts data from tables to cubes.