July 2010
Intermediate to advanced
510 pages
17h 15m
English
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CHAPTER 11Transactions, Snapshots, and Accumulating Snapshots
Each star schema in the preceding chapters features a fact table that measures activities. This kind of fact table is known as a transaction fact table. As you have seen, it supports a wide variety of analytic possibilities with great efficiency and can be used to capture detailed granular information about a process. Some facts, however, cannot be easily studied using this kind of design, and others cannot be accommodated at all.
This chapter introduces two additional kinds of fact table: the snapshot and the accumulating snapshot. It begins with a review of the transaction fact table design, highlighting some key characteristics covered in previous chapters. Snapshots and accumulating ...
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