title: What is the difference between entity and relationship
body: <p>I am new to the RDBMS.</p>
  
  <p>I am Learning ER model in RDBMS.
  In ER model, the entity is an real world object and it has an attributes.
  The relationship is an mapping between entity set.
  The relationship also have a the attributes.
  Please explain the difference between entity and relationship.</p>