Would you please help me with this homework ?
1- Explain what requirements this ER diagram is implementing
2- Draw an ER diagram (relationships) for the following business
rules in a company:
• A salesperson manages one or many other salespeople while a
salesperson is managed by only one salespeople.
• A salesperson can be an agent for many customers but a customer
is managed by only one salesperson.
• A customer can place many orders. But an order can be placed by
one customer.
• An order lists many inventory items. An inventory item may be
listed on many orders.
• An inventory item is assembled from many parts. A part may be
assembled into many inventory items.
• Many employees assemble an inventory item from many parts. A
supplier supplies many parts. A part may be supplied by many
suppliers.
3- Draw a full ER diagram for the following requirements: The
university database stores details about university students,
courses, the semester a student took a particular course (and his
mark and grade if he completed it), and what degree program each
student is enrolled in. Consider the following requirements
list:
• The university offers one or more programs.
• A program is made up of one or more courses.
• A student must enroll in a program.
• A student takes the courses that are part of her program.
• A program has a name, a program identifier, the total credit
points required to graduate, and the year it commenced.
• A course has a name, a course identifier, a credit point value,
and the year it commenced.
• Students have one or more given names, a surname, a student
identifier, a date of birth, and the year they first enrolled. We
can treat all given names as a single
object—for example, “John Paul.”
• When a student takes a course, the year and semester he attempted
it are recorded. When he finishes the course, a grade (such as A or
B) and a mark (such as 60
percent) are recorded.
• Each course in a program is sequenced into a year (for example,
year 1) and a semester (for example, semester 1).
1.
2.
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Would you please help me with this homework ? 1- Explain what requirements this ER diagram...
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