Nursing Informatics: Benefits and Disadvantages of ER Diagrams and Logical Design

Running head: NURSING INFORMATICS
NURSING INFORMATICS
Name of the Student
Name of the University
Author note

1NURSING INFORMATICS
Table of Contents
Answer to question Part A: 2
Answer to question Part B: 3
References: 5

2NURSING INFORMATICS
Answer to question Part A:
What are the benefits or disadvantages of ER diagrams?
There are several benefits of the ER Model which are:
 The ER Model allows the representation of the straightforward relation. When
ER Diagram is designed for the particular database application, the
representation format in a relational process for the database model relatively
becomes straight forward which benefits in achieving the output from the
database (Al-Masree, 2015).
 The conversion method from the Entity Relationship model to any other
model as per requirement is easy and is not complex. The conversion process
or the converted result from the ER model to in any other model can be easily
achieved.
 The objective of the ER model is also an advantage over other models which
states the graphical representation in the model for the better understanding.
The ER Model delivers graphical and diagrammatical representation of the
different entities including the attributes that states the relationship between
them. The graphical representation also enables the easy understanding of the
structure of the data. This type of the representation of the model reduces the
redundancy and many other difficulties.
Why bother with logical design and not just create tables and columns (physical
design) directly?
The part of logical modeling in the process of data modeling works in gathering the
requirements for the business process and converting those requirements of the business in
the form of a model. The objective of the logical designs in the model revolves around the