title: Eclipse reports error on my JPA project
body: <p>Each time  I make a JPA project Eclipse reports that there are errors in my project but I do  not understand why it does so. I added image and errors below:</p>
  
  <p><img src="https://i.stack.imgur.com/Am3rb.png" alt="enter image description here"></p>
  
  <blockquote>
    <p>Description   Resource    Path    Location    Type Column "id" cannot be resolved
    on table "page"   Page.java   /BreakpointJPA/src/no/breakpoint/domain line
    14    JPA Problem</p>
    
    <p>Description   Resource    Path    Location    Type Column "title" cannot be
    resolved on table
    "page"    Page.java   /BreakpointJPA/src/no/breakpoint/domain line 18 JPA
    Problem</p>
    
    <p>Description   Resource    Path    Location    Type Primary key join column "id"
    cannot be resolved on table
    "page"    Page.java   /BreakpointJPA/src/no/breakpoint/domain line 10 JPA
    Problem</p>
  </blockquote>
  
  <p><img src="https://i.stack.imgur.com/ypLKE.png" alt="enter image description here"></p>