Question: 1. Define - relation schema, relation instance. What is the difference between the two? 2. Define - database schema, database instance. What is the difference

1. Define - relation schema, relation instance. What is the difference between the two? 2. Define - database schema, database instance. What is the difference between the two? 3. Define -- entity set and a relationship set. Provide two examples for each. (Your examples must be different than the one shown in the text book.) 4. Define -- composite attribute, multi-valued attribute. Provide two examples for each. (Your examples must be different than the one shown in the text book.)

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