title: Multi valued attributes in sql
body: <p>A database schema with a relation Employee whose attributes are as shown below, with types specified for multi-valued attributes.</p>
  
  <pre><code>Employee = (ename, ChildrenSet multiset(Children), SkillSet multiset(Skills))
  Children = (name, birthday)
  Skills = (type, ExmSet setoff(Exams))
  Exams = (year, city)
  </code></pre>
  
  <ol>
  <li>Define the above schema, with appropriate types for each attribute.</li>
  <li>Find the name of all employees who have a child born on or after January 1, 2000</li>
  <li>Find those employees who took an examination for the skill type “typing” in the city 
      "Dayton"</li>
  <li>List all skill types in the relation Employee.</li>
  </ol>
  
  <p>please can u help me.</p>