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Data Modeling Made Simple with ER/Studio Data Architect by Steve Hoberman

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You can document everything that is needed to take data from a source and load it into a target. There are three main components required to document lineage: sources, rules, and data flows. Sources are the starting points for the lineage, and may be other ER/Studio data models, a SQL file, or a database. Rules are the types of changes (also known as “transformations”) that can be applied to the source structures prior to loading the target structures. The data flow is one complete mapping, which includes specific sources, rules, and targets. Targets are the structures on the current model that we are loading.

For example, in Figure 12.2, we have Author from one of the models from Chapter 10 (Recall Figure 10.17) as ...

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