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What is a Literal and how many types of Literals are available in Oracle?
   
 
 
 
What are the rules for using Column alias in a SQL query?
   
 
 
 
What are the rules for using DISTINCT clause in a SQL Query?
   
 
 
 
What is an expression and how do you build an expression in SQL query?
   
 
 
 
What are the minimum things required to connect to an Oracle Database?
   
 
 
 
Write a Query to list out all details of employees
   
 
 
 
Write a query to display ename, deptno and Sal from EMP table
   
 
 
 
SELECT 7 FROM EMP; What output you will see when you execute this query?
   
 
 
 
Write a Query to list out all details of employees who earn more than 2000$
   
 
 
 
Write a Query to list out employee names and their manager-ids of all employees