Question1. Explain in brief the three parts of Relational Model.
Question2. Illustrate the following terms:
i. Entity
ii. Attribute
iii. Relationship
iv. Primary Key
v. Foreign Key
vi. Candidate Key
vii. Surrogate Key
Question3. The term integrity refers to accuracy or correctness of data in database. Illustrate the following terms:
i) Domain Integrity
ii) Entity Integrity
iii) Referential Integrity
Question4. What do you understand by the term recursive relationship? Give an instance of a many to many recursive relationships.