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.