Logical Modelling Exercises Part 2. Answers?. Explain the database anomalies in the following table:. Anomalies?. What is the Primary Key? Let us asssume it is Project_Code . Insert: Need to know details of Project & Staff & Pay in order to insert a ‘complete’ new record .
2 ABC manages a customer purchasing system for which you must develop a Database Schema (i.e. Logical Data Model), based upon the following ER Diagram.