title: ORA-00904: "Extent1"."IsModified": invalid identifier,
body: <p>Generated CodeFirst classes from working EDMX. When I try to connect database I get this error.  it is looking for some columns which are not in the table. also these columns not in POCO and Fluent Mapping classes. </p>
  
  <p><strong>works fine with EDMX, have issue only with Codefirst</strong></p>
  
  <p>Why below columns are added in the query? is there any properties, method which can disable these columns getting included?</p>
  
  <p>so because of this I get below error.</p>
  
  <pre><code>An error occurred while executing the command definition. See the inner exception for details.
  Inner Exception:ORA-00904: "Extent1"."IsModified": invalid identifier
  
      public TestContext() :
          base(GetDefaultConnection(), true)
      {
          Database.SetInitializer&lt;TestContext&gt;(null);
  
          this.Database.Log = Console.Write; 
          Configure();
      }
  
  
  SELECT 
  "Extent1".USERID,
  "Extent1".FIRST_NAME,
  "Extent1".LAST_NAME,
  "Extent1".EMAIL_ADDRESS,
  "Extent1".PHONE_NO,
  "Extent1".FAX_NO,
  "Extent1".ID,
  "Extent1"."DisableEvent",
  "Extent1"."RowNumberValue",
  "Extent1"."IsNew",
  "Extent1"."IsModified"
  FROM USERS "Extent1"
  WHERE (((UPPER("Extent1".USERID)) = :p__linq__0) OR ((UPPER("Extent1".USERID) IS NULL) AND (:p__linq__0 IS NULL))) AND ROWNUM &lt;= 1
  -- p__linq__0: 'SYSADM' (Type = String, Size = 6)
  -- Executing at 3/11/2015 14:25:40 +05:30
  </code></pre>
  
  <p>below columns not in actual table.</p>
  
  <pre><code> "Extent1"."DisableEvent",
  "Extent1"."RowNumberValue",
  "Extent1"."IsNew",
  "Extent1"."IsModified"
  FROM USERS "Extent1" 
  </code></pre>