Question

Briefly explain relational model?Also explain different types of entities.

Answer 1

Answer:

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Answer 2

Relational model A particular attribute or combination of attributes is chosen as a primary key that can be referred to in other tables, when it's called a foreign key. ... The model also accounts for the types of relationships between those tables, including one-to-one, one-to-many, and many-to-many relationship

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