Unformatted text preview: The data is historical, and it’s size is getting bigger with time. New records with a time stamp are added when the source data are changed. Hence, there is a need to have enough storage space, especially when the changes are frequent. Due to the space limit, the management needs to decide at what age the data needs to be purged. Since the data must be current, the managers need to consider how often the data should be refreshed to reflect the changes. Kimball, R. (1998) The data warehouse lifecycle toolkit . NewYork: Wiley & Sons Inc. ....
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- Spring '09