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Building the Unstructured Data Warehouse: Architecture, Analysis, and Design by Krish Krishnan, W. H. Inmon

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One of the most basic activities of Textual ETL is that of allowing a search or analysis for data to be either case sensitive or case insensitive. There are some instances where case sensitivity is desired and others where case sensitivity is not desired. The Textual ETL must be able to accommodate both circumstances. Figure 4.6 shows the need for both instances as part of Textual ETL processing.

Figure 4.6 Case sensitivity

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