title: How do I update objects using a DbContext?
body: <p>How do I use the class <code>DbContext</code> to update a collection of objects?</p>
  
  <p>I have a <code>DbContext</code> Class called "Animals". <code>Animals</code> has a <code>DbSet</code> called "Reptiles" which is another class. I can query the <code>Animals</code> with Linq to get the objects I want from the <code>Reptiles</code>. Now, how do I update those objects which I got from the query? I want to save back into the database the changes I do.</p>