DTS and the Data Warehouse
Most new database projects follow the same pattern. We are developing this new system to take the place of an older one. We currently have a decade or so of information stored in system A. When we go live with system B, we need to leave all our previously collected information intact. So, a fair amount of time is spent designing the database schema and taking into account that we will need to preserve the information as it exists now. A plan of action usually develops for how to extract, transform, move, and finally load this information from system A to system B. The data load is usually done once, and the old machine (whatever it might be) is then turned off and sold for scrap. Because this is usually done only once, ...
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