1. 1. What is the difference between TRUNCATE and DELETE commands?
2. Which system table contains information on constraints on all the tables created ?
3. Explain normalization?
4. types of SQL functions
5. WHAT OPERATOR PERFORMS PATTERN MATCHING?
6. What is database?
7. How can i hide a particular table name of our schema
8. How do I eliminate the duplicate rows ?
9.How do I display row number with records?
10.Find out nth highest salary from emp table
11.Display Odd/ Even number of records
12. WHAT IS A INLINE VIEW
13. Which date function returns number value?
14. What are the more common pseudo-columns?
15. What is a relational database management system?
16. State the difference between a primary key and foreign key?
17. What is a synonym?
18. What is a view?
19. What is a schema?
20. What is a join, explain the types of joins?
21. What command is used to get back the privileges offered by the GRANT command?
22. What command is used to create a table by copying the structure of another table?

2. 23. How can variables be passed to a SQL routine?
24. What is the use of the DROP option in the ALTER TABLE command?
25. What is a Cartesian product?
26. What is the usage of SAVEPOINTS, COMMIT, ROLLBACK?
27. What is difference between CHAR and VARCHAR2? What is the maximum SIZE allowed for each
type?
28. How many LONG columns are allowed in a table? Is it possible to use LONG columns in WHERE
clause or ORDER BY?
29. Can a view be updated/inserted/deleted? If Yes – under what conditions?
30. What are the advantages of VIEW?
31. How can I find the total number of records in a table?
32. How can you compare a part of the name rather than the entire name?
33.What is GROUP BY?
34. How can I change my Oracle password?