Creating an External Content Type for a Related Item
Most normalized databases have several tables with relationships to other tables, which are models for real-world information. A customer, for example, can place one or more orders with a company. An order can contain one or more products, and a single order may be delivered in one or more shipments.
A normalized database, to accurately model this information, can define relationships between these tables. A one-to-many relationship would exist between a Customers table and an Orders table. Both tables would contain a CustomerID field. In the Customers table, each individual record would have a unique CustomerID. In the Orders table, there might be several records with the same CustomerID. ...
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