Data warehouse provides storage and management for mass data, but data schema evolves with time on. When data schema is changed, added or deleted, the data in data warehouse must comply with the changed data schema, ...Data warehouse provides storage and management for mass data, but data schema evolves with time on. When data schema is changed, added or deleted, the data in data warehouse must comply with the changed data schema, so data warehouse must be re organized or re constructed, but this process is exhausting and wasteful. In order to cope with these problems, this paper develops an approach to model data cube with XML, which emerges as a universal format for data exchange on the Web and which can make data warehouse flexible and scalable. This paper also extends OLAP algebra for XML based data cube, which is called X OLAP.展开更多
Along with the rapid development of internet, CRM has become one of the most important facts leading the enterprises to be competent. At the same time, the analytical CRM based on Date Warehouse is the kernel of CRM s...Along with the rapid development of internet, CRM has become one of the most important facts leading the enterprises to be competent. At the same time, the analytical CRM based on Date Warehouse is the kernel of CRM system. This paper mainly explains the idea of CRM and the DW model of analytical CRM system.展开更多
The paper introduced the data mining and issues related to it.Data mining is a technique by which we can extract useful knowledge from urge set of data.Data mining tasks used to perform various operations and used to ...The paper introduced the data mining and issues related to it.Data mining is a technique by which we can extract useful knowledge from urge set of data.Data mining tasks used to perform various operations and used to solve various problems related to data mining.Data warehouse is the collection of different method and techniques used to extract useful information from raw data.Genetic algorithm is based on Darwin’s theory in which low standard chromosomes are removed from the population due to their inability to survive the process of selection.The high standard chromosomes survive and are mixed by recombination to form more appropriate individuals.In this urge amount of data is used to predict future result by following several steps.展开更多
文摘Data warehouse provides storage and management for mass data, but data schema evolves with time on. When data schema is changed, added or deleted, the data in data warehouse must comply with the changed data schema, so data warehouse must be re organized or re constructed, but this process is exhausting and wasteful. In order to cope with these problems, this paper develops an approach to model data cube with XML, which emerges as a universal format for data exchange on the Web and which can make data warehouse flexible and scalable. This paper also extends OLAP algebra for XML based data cube, which is called X OLAP.
文摘Along with the rapid development of internet, CRM has become one of the most important facts leading the enterprises to be competent. At the same time, the analytical CRM based on Date Warehouse is the kernel of CRM system. This paper mainly explains the idea of CRM and the DW model of analytical CRM system.
文摘The paper introduced the data mining and issues related to it.Data mining is a technique by which we can extract useful knowledge from urge set of data.Data mining tasks used to perform various operations and used to solve various problems related to data mining.Data warehouse is the collection of different method and techniques used to extract useful information from raw data.Genetic algorithm is based on Darwin’s theory in which low standard chromosomes are removed from the population due to their inability to survive the process of selection.The high standard chromosomes survive and are mixed by recombination to form more appropriate individuals.In this urge amount of data is used to predict future result by following several steps.
