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Web Warehouse has conquered the limitation of data warehouse geographical dependencies. With the advent of web warehouse, now decision makers of an organization can retrieve decisions related knowledge through internet. When data is fetched from a web warehouse located on web server the data security, Integrity and confidentiality problems rise up. To overcome security threats and availability issues a secure enhance web warehouse model is developed. This model uses XML based web services to cope with the platform and environment dependencies with multi-knowledge confidentiality and users authentication techniques.

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