You began drawing E-R diagrams soon after your entry into the health maintenance organization for which you’re designing a system. Your team member is skeptical about using E-R diagrams before design of the database is begun. In a paragraph, persuade your team member that early use of E-R diagrams is worthwhile.
What will be an ideal response?
Early use of E-R diagram will help to:
A. Gain a better understanding of the organization
B. Narrow the scope of the problem to make it more manageable and meaningful
C. Identify the primary entity
Computer Science & Information Technology
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Assume Cylinder is a subtype of Circle. Analyze the following code:
``` Cylinder cy = new Cylinder(1, 1); Circle c = cy; ``` a. The code has a compile error. b. The code has a runtime error. c. The code is fine.
Computer Science & Information Technology