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2.1. SQL Primary Key constraint, Drop primary Key 2.2. Foreign Key Constraint 2.3. ON DELETE SET NULL clause of Foreign Key 2.4. On Delete Cascade Foreign Key 2.5. How To Rename Table in SQL using ALTER TABLE statement 2.6. How to Add / Delete column from an existing table using alter table 2.7. Rename and Modify Column Using Alter Table 2.8. SQL Joins- Natural Join With ON and USING clause 2.9. How to install Oracle Database 11g Express Edition R2 on Windows 7 2.10. Introduction of Joins in SQL 2.11. Right Outer Join in SQL for Rebellion Rider 2.12. Left Outer Join 2.13. Full Outer Join with example 2.14. Inner Join In SQL 2.15. Cross Join In SQL