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For each of the following (parts a through g) E-R diagrams: L. Transform the diagram to a relational schema that shows referential integrity constraints (see the following figure for an example of such a schema - underlined items are primary keys, dotted underlines refer to foreign keys, while the arrows indicate direction from foreign to primary) CUSTOMER CustomerlD CustomerName ORDER OrderlD OrderDate CustomerlD ORDER LINE OrderlD rd OrderedQuantity PRODUCT roductD ProductDescription