1.Please create related three tables about a subjects (for exp. Students, Employees, Products, Books, Club_Membership, Hobbies etc.) must contain at least a default value definition and a primary key, a foreign key,unique,not null and check constraints. (10 points) a) Write or paste SQL commands (create table ..) b) Paste structure of tables (describe) below: (10 points) 2. Create a view. (10 points) Write SQL commands below: a.)Create a simple view for each tables. b.)Create a complex view that joining with three tables. 3.Create a non-unique index on each table for a non-uqiue column. (10 points) Write SQL commands below: 4. Create a sequence for primary key column on each table. (10 points) Write SQL commands below: 5.Insert any three records to each table. (10 points) Write SQL commands below: 6.Update at least one record on each table. (10 points) Write SQL command/s below: 7. Create backup tables from your tables. (10 points) Write SQL command/s below: 8. How to list your objects (tables,views,indexes,sequences,synonyms) and constraints.Please write commands and results. (10 points) Write SQL command/s below: 9. Please add a new column to your tables. Write sql commands and results. (10 points) Write SQL command/s below: 10. Write a conditional insert statement (10 points)