Group 5 MVCH Presentation

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Group 5MVCH Presentation

• Michael Glover
• Justin Neff
• Amanda Cooper

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Who MVCH depends on

• Employees
• Patients
• Physicians
• Volunteers

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Common Attributes

• personID (identifier)
• name
• address
• cityStateZip
• dateOfBirth
• phone

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Unique Attributes

• Employees
• dateHired
• Physicians
• specialty
• pagerNumber

• Patients
• dateOfContact
• calc-age
• Volunteers
• skill

An Employee or a Physician who is also a Patient
also has an attribute of specialService.
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Unique Methods

• Each of the four persons (entities) have at least
  one unique method.
• Employees
• calcBenefits()
• Volunteers
• assignToCenter(CareCenter)
• Physicians
• treats(Patient)
• Patients
• CalcAge()
• assignToLocation(Bed)

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Physician-to-Patient Relationships

• Each Patient has one and only one Physician who
  is responsible for the Patient.
• A Physician may not be responsible for a Patient
  at a given time or may be responsible for one or
  more Patients.
• Patients are divided into two groups
• Resident
• Attribute dateOfAdmission
• Method assignToBed(Bed)
• Outpatient
• Scheduled for zero or more Visits

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Visit Entity

• Attributes
• date (partial identifier)
• comments
• An instance of Visit cannot exist without an
  outpatient owner entity.

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Three Groups of Employees

• Nurse
• Attribute certificate (indicates qualification)
• Relationship assigned to one and only one Care
  Center
• Staff
• Attribute jobClass
• Technician
• Attribute skill
• Relationship assigned to one or more
  laboratories

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Care Center Entity

• Attributes
• name (identifier)
• location
• Examples of Care Centers
• Maternity
• Cardiology
• Emergency

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Care Center Relationships

• Relationships
• A Care Center may have one or more nurses
  assigned to it.
• One of the nurses assigned to a Care Center is
  appointed nurseInCharge.
• The nurseInCharge must have an RN certificate.
• A Care Center is assigned zero or more Beds.
• Care centers are located in Buildings.

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Bed Entity

• Attribute bedID (composite identifier)
• bedNumber
• roomNumber
• Method utilization
• Relationship to Patients
• Each Resident Patient must be assigned a Bed.
• A Bed may or may not have a Resident Patient
  assigned to it at a given time.

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Building Entity

• Attributes
• buildingNumber
• buildingName
• buildingCode

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Laboratory Entity

• Attributes
• name (identifier)
• location
• Relationships
• Each Technician is assigned to one or more
  Laboratories.
• A Laboratory must have at least one Technician
  assigned to it and may have any number of
  Technicians assigned.
• A Laboratory is housed in only one Building, and
  a Building may house many Laboratories.
• A Laboratory includes equipment and the employees
  who work in that Laboratory.
• Method numberOfEmployees

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Project Question 1

• Is the ability to model superclass/subclass
  relationships likely to be important in a
  hospital environment such as Mountain View
  Community Hospital? Why or why not?

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Project Question 1 Answer

• Since many of the classes at MVCH share common
  attributes and behaviors, the ability to model
  superclass/subclass relationships will very
  important to MVCH.
• Generalizing much of the common attributes and
  behaviors into superclasses facilitates a better
  understanding and simplification of the system.
• Thus, superclass use leads to improved system
  redesign and future extensions to the system.

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Project Question 2

• Do there appear to be any link objects in the
  description of the data requirements in this
  project segment? If so, what are they?

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Project Question 2 Answer

• There do not appear to be any link objects in the
  data requirements.
• However, It could be argued that the association
  between the Nurse class and Care Center class
  could be represented with a class that would
  contain information as to whether or not the
  nurse is in charge.

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Project Question 3

• Are there any abstract object classes in the
  description of this hospital? Why or why not?

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Project Question 3 Answer

• The Employee class and Care Center class are both
  complete and serve as an abstract class for
  generalizing much of the information needed by
  their subclasses.

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Project Exercise 1

• Draw a class diagram to accurately represent this
  set of requirements, carefully following the
  notation from this chapter.

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(No Transcript)
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Project Exercise 2

• Develop definitions for each of the following
  types of object classes in your class diagram
  from Project Exercise 1. Make reasonable
  assumptions based upon your own knowledge and
  experience.

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Project Exercise 2 Answer

• Classes
• A place to store information and actions with
  entities in the real world.
• Attributes
• A place to store a piece of information.
• Relationships
• The connection or dependence upon other classes
  to help define the hospital system.
• Methods
• The actions and procedures the classes perform.

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Project Exercise 3

• You should recognize the statement A nurse
  cannot be appointed nurseInCharge of a care
  center unless he or she has an RN certificate as
  a business rule. How did you model this business
  rule differently from what you did in Chapter 4?
  What is the constraint object? Is it an entity,
  an attribute, a relationship, or some other
  object?

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Project Exercise 3 Answer
From Chapter 4
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Project Exercise 3 Answer Continued . . .

• We have modeled this relationship of a nurse as a
  nurse in charge as a role of the Nurse object.
• The constraint object is the attribute of
  certificate, that specifies that a nurse must
  have a RN certificate to have the role of
  nurseInCharge.

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Project Exercise 3 Answer Continued . . .
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Project Exercise 4

• Compare the class diagram you developed in this
  chapter with the EER diagram that you developed
  in Chapter 4 and with the E-R diagram you
  developed in Chapter 3 in Project Exercise 2.
  What are the differences between these two
  diagrams? Why are there differences?

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Project Exercise 4 Answer

• The Class diagram shows the methods associated
  with each object class.
• The Class diagram is also more compact and is
  also easier to read and follow.
• In our Class diagram, Employee and Care Center
  are modeled as abstract databases.

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Project Exercise 5

• Did you find any examples of aggregation or
  composition in the description of the project in
  this chapter? Why or why not?

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Project Exercise 5 Answer

• Yes, both aggregation and composition are
  demonstrated in this chapter.
• An example of aggregation is in the statement,
  There are other persons in the hospital
  community who do not belong to one of these four
  (Person) groups. Aggregation is demonstrated
  since some classes of person are not enumerated.

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Project Exercise 5 Answer continued . . .

• Employee and Patient are two examples of
  composition listed in this case study.
• The following statements demonstrate composition
• Patients are divided into two groups residents
  and outpatients.
• Employees are divided into three groups nurse,
  staff, and technician.
• These statements are considered composition
  because there are no other types of Patients or
  Employees other than those listed.

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Justins Question

• In the class diagram for this chapter, the entity
  Employee is subdivided into three groups. What
  are the three groups, what attributes do they
  share, what are their individual attributes, and
  can an Employee be a member of more than one
  group?

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Amandas Question

• In the diagram of Project Exercise 1, what does
  the brackets containing the words overlapping,
  incomplete representing?

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Michaels Question

• Which two of the following database are in the
  abstract class? Care Center, Patient, Physician
  or Employee. Explain what they are made up of.