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The Data Warehouse Toolkit - Third Edition
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Before designing clickstream dimensional models, let’s consider all the dimensions that may have relevance in a clickstream environment. Any single dimensional model will not use all the dimensions at once, but it is nice to have a portfolio of dimensions waiting to be used. The list of dimensions for a web retailer could include:
All the dimensions in the list, except for the last four shown in bold, are familiar dimensions, most of which we have already used in earlier chapters of this book. But the last four are the unique dimensions of the clickstream and warrant some careful attention.
The page dimension describes the page context for a web page event, as illustrated in Figure 15-1. The grain of this dimension is the individual page. The definition of page must be flexible...
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