code: public static void assertDelta(String message, DataSet oldData, DataSet newData) throws DBAssertionError {
      DBAssert.deltaAssertion(CallInfo.create(message), oldData, newData);
    }
docs: Assert database delta expressed by 'old' and 'new' data sets (error message variant).
  
  @param message The error message for the assertion error.
  @param oldData Expected 'old' data.
  @param newData Expected 'new' data.
  @throws DBAssertionError if the assertion fails.
  
  @see #assertUnchanged(String,DataSource)
  @see #assertDeleted(String,DataSet)
  @see #assertInserted(String,DataSet)