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A data warehousing infrastructure for telecommunications priced call detail data is integrated with a Web/Internet based reporting system providing a common GUI enabling the requesting, customizing, scheduling and viewing of various types of priced call detail data reports. Such an infrastructure pe

A data warehousing infrastructure for telecommunications priced call detail data is integrated with a Web/Internet based reporting system providing a common GUI enabling the requesting, customizing, scheduling and viewing of various types of priced call detail data reports. Such an infrastructure performs an extraction process to obtain only those billing detail records of entitled customers, and a harvesting process for transforming the billing records into a star schema format for storage in one or more operational data storage devices. The system is integrated with a database server supporting expedient and accurate access to the customer's telecommunications priced call detail data for priced call detail data report generation.

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A data warehousing infrastructure for telecommunications priced call detail data is integrated with a Web/Internet based reporting system providing a common GUI enabling the requesting, customizing, scheduling and viewing of various types of priced call detail data reports. Such an infrastructure pe

A data warehousing infrastructure for telecommunications priced call detail data is integrated with a Web/Internet based reporting system providing a common GUI enabling the requesting, customizing, scheduling and viewing of various types of priced call detail data reports. Such an infrastructure performs an extraction process to obtain only those billing detail records of entitled customers, and a harvesting process for transforming the billing records into a star schema format for storage in one or more operational data storage devices. The system is integrated with a database server supporting expedient and accurate access to the customer's telecommunications priced call detail data for priced call detail data report generation. executing the first condition tree and determining documents from the candidate documents by calculating a second condition tree; and wherein said code (f) generates the first condition tree by index keys used in the second condition tree and other index keys positioned in the query character string before or after the index keys used in the second condition tree and indicating a least number of the documents including the other index keys. 25. The method as claimed in claim 24, wherein: said step (c) divides a query character string into more than two index keys of n-character strings having n characters so as to overlap query character when a length of the query character string is more than n+1 characters where n is an integer greater than one, and said step (d) synthesizes the index keys by at least one distance operator indicating a distance between the index keys divided in said step (c). 26. The m