II Relational Database Programming how to operate From an abstract point of view to study the question of database queries and modifications.(chapter 5) ■ Relational Algebra ■A Logic for relation From a practical point to learn the operations on Database The Database Language SQL (chapter 6~10)II Relational Database Programming – how to operate From an abstract point of view to study the question of database queries and modifications. (chapter 5) „ Relational Algebra „ A Logic for relation From a practical point to learn the operations on Database „ The Database Language SQL (chapter 6~10)