Instructions

Write a reflective essay regarding the
systems development environment and the sources of software. This assignment
covers Course Objective5.

This essay should cover the following topical
area.

Conceptual
Data Modeling

o
Conceptual modeling looks at how the data is
structured and what the characteristics of the data are. What characteristics
of data are represented in an E-R diagram?

o
Characteristics for attributes are also
called properties. So every entity must have attributes to help make it unique.
Behavior is important because the entity responds to other entities. For
example, a person entity inserts a credit card into an ATM entity; the ATM
entity responds with an action. The person will react differently depending on
what the ATM does (reject or accept the credit card). What are at least three
other examples of behaviors for other entities? (Please create your own
examples,and do not copy from the Internet.)

o
Cardinality describes the actual number of
entities of the same type involved in a process. So in our class we have 30
students of the student entity type. The cardinality would then be described as
30 students. We can describe the number as 0, 1, many (and then can display the
actual minimum and maximum allowed). We can also say whether the number is
optional or mandatory. For instance, it is mandatory we have one instructor for
our class. It is not optional. What are at least three other examples of
cardinality?

Use APA format.

•
You
are expected to cite at least two academic references.

•
The
essay should be about two pages in length, double spaced, with standard
margins.

Make sure your essay
contains your name, the week, and the topic on the cover page.

Dropbox
Instructions

Refer
to the Dropbox instructions on the weekly Assignments page.