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What is Understanding E-R Diagrams and Attributes about?
An entity-relationship diagram (ERD) is a graphical representation that shows the relationships between entities such as people, objects, or concepts within an information system. An ERD can help define business processes and form the basis for a relational database. While useful for structuring relational data, an ERD alone cannot sufficiently represent semi-structured or unstructured data or integrate data into an existing system. The three main components of an ERD are entities, relationships between ent
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