Which of the following gives a logical structure of the database graphically ?
A. Entity-relationship diagram
B. Entity diagram
C. Database diagram
D. Architectural representation
Answer:A
Which of the following gives a logical structure of the database graphically ?
A. Entity-relationship diagram B. Entity diagram C. Database diagram D. Architectural representation
Explanation:E-R diagrams are simple and clear—qualities that may well account in large part for the widespread use of the E-R model. 2. The entity relationship set is represented in E-R diagram as