What is the difference between primary key and a unique key

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Reference no: EM134008981

Assignment:

SQL Server

1. What is the difference between primary key and a unique key?

2. What is the difference between primary key and foreign key?

3. Discuss whether or not a table can have multiple unique, and/or foreign keys.

4. What does seed and increment represent in an Identity column? Elaborate.

5. What is a Composite primary key in SQL Server?

6. What is a Natural primary key?

7. What is a Surrogate key?

8. What is a Foreign key?

9. What is the name of the set option that you need to turn on to manually insert data to an Identity column?

10. Write the T-SQL statement to remove an existing constraint from a given table.

11. What is INNER JOIN ?

12. What is RIGHT OUTER JOIN?

13. What is FULL OUTER JOIN?

14. What is SELF JOIN?

15. Please copy the bold words below and paste them in the answer space to share the actual activity of members and status of your team on this topic.

16. What are the DISADVANTAGES or COSTS of INDEX?

17. What is Fill Factor and what is the best value for it?

18. What is Execution Plans?

19. What is the difference between Estimated Execution Plan Vs Actual Execution Plan?

20. What is a Heap Table?

21. What is the difference between Table scan Vs Index scan?

22. What is the difference between Index scan Vs Index seek?

23. What is page split and when does page split happen? Is there any setting to avoid unnecessary page splits?

24. What is COVERING INDEX? is there any benefit of using COVERING INDEX?

25. Why do we need a view?

26. Write the FOUR PART naming convention?

27. What are the View OPTIONS? Explain each one of them with its respective use?

Reference no: EM134008981

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