The book covers almost the full spectrum of data analysis: the storage of information, the operational and intellectual analysis. Especially, the methods of Data Mining are studied in detail. Beside the description of popular and established analysis methods it presents new results. Following the trend toward Realtime Analytics, it start with standard analysis methods, which are working on historical data, and moves forward to methods and algorithms that operate in real time. The book aims at an audience of advanced students and experts in the field of data analysis. The book may also be useful for specialists dealing with the design of corporate information systems. The detailed description of the methods and algorithms of data analysis makes the book not only a source of information about these fields but also useful for the development of practical systems.