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Database Design Using Entity Relationship Diagram pdf

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table and combining them with the corresponding rows in the EMPLOYEE table where the names were equal (an equi-join operation)
Figure 2.5: An ER Diagram with a Multi-Valued Attribute
Figure 2.5A: An ER Diagram with a Derived Attribute — age
Figure 2.6:   An ER Diagram with a Primary Key or Unique Identifier Attribute
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