Create/Drop Table
Create/Drop Table ~10 mins
Task 1: Create Table
    create table employees(id NUMBER, name VARCHAR2(20));
Task 2: Describe Table
    desc employees;
Task 3: Insert Records
    insert into employees(id,name) values (1,'Naresh');
insert into employees(id,name) values (2,'Prabhu');
Task 4: Select Records
    select * from employees;
Task 5: Drop table
    drop table employees;