James A.O'Brien Introduction to Information Systems Eleventh Edition 10 Database Structures Hierarchical Structure Network Structure Dept Dept A Dept B Employee Project A Employee Project B Employee 1 2 3 Employee Employee Project A Project B 1 Relational Structure Dept Dname Dloc Dmgr Empno Ename Etitle Dept A 7 A B 2 B c 3 C James A. O’Brien Introduction to Information Systems Eleventh Edition 10 Database Structures Employee 2 A Empno Ename Etitle Dept 1 2 B 3 C Relational Structure Hierarchical Structure Network Structure Employee 3 Project A Project B Dept Dname Dloc Dmgr A B C Employee 2 Employee 1 Project A Employee 1 Dept Dept A Dept B Project B