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draw a Crows foot ERD diagram with this information: For this assignment you are going to continue working on the database from Marcia s Dry
draw a Crows foot ERD diagram with this information:
For this assignment you are going to continue working on the database from Marcias Dry Cleaning.
Below is current Invoice that displays some of the data stored in the database.
With regards to orders, all orders must have at least one item on them. All orders need to show which
employee took the order along with who completed a service on the order. Not all employees will take
orders and not all employees will complete orders. Finally, not all services will be on orders.
When describing services, the database needs to store the name of the service, its description, and the
cost of that service. Additionally, it needs to store the category for each service. There are many
different categories. Such as pants, shirts, coats, suits, wedding dresses, dresses and other. The other
category describes items brought in that do not fit the categories mentioned. Marcia wants to create
reports showing which categories sell the most. Therefore, the category names need to be uniform to
ease with searching. For instance, Marcia doesnt want the shirts category to include data such as dress
shirt, short sleeve shirt, long sleeve shirt, etc. Not all categories will be in services.
For customers, a customer can exist in the database without being associated with an order. The
database needs to store the names of customers, along with their contact information and when they
became a customer at Marcias Contact information includes address, city, state, zip, phone and email.
The database also needs to keep track of Employees. Specifically, the database needs to store
information about the employees name, contact information, date of birth, social security number, date
hired, and date terminated.
Finally, Marcia will need to run the following reports:
Sales Report displays the category of the items sold and the amount. This report is ran weekly,
monthly, quarterly and yearly
Employees With Services displays the name of the employee and the total number of services
they completed
Customer Total Orders displays the name of the customer and the total they spent. This report is
run monthly, quarterly and yearly.
This assignment will be graded based on :
Correctly drew entities
to match all of the
themes in the case
Identified and correctly
assigned Primary keys
for all entities
Correctly identified
relevant attributes for all
entities
All attributes in all
themesentities are
relevant. Attributes
describe the entity and
should not be in a
different entity.
All many to many
relationships are
resolved.
Correct placement of
foreign keys and
relationship line is in the
right direction. Foreign
keys correctly relate one
entity to another.
Relationship lines
created and
demonstrated proper
cardinality
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