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What is Understanding Entity Relationship Diagrams about?
The document discusses key concepts in entity relationship diagrams including entities, attributes, and various types of relationships between entities. It defines entities as representing categories of data, attributes as subgroups of information within an entity. Relationship types covered are mandatory, optional, one-to-one, one-to-many, many-to-many, and recursive. Many-to-many relationships should be resolved into two one-to-many relationships using intermediate/join entities. Examples of different rel
- Author
- Jyoti Sharma
- Language
- EN