Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Need help fixing the ERR diagram attached. From the following feedback: 1 - No subtypes and No subtype attributes 2 - No completeness constraints rules

Need help fixing the ERR diagram attached. From the following feedback:
1- No subtypes and No subtype attributes
2- No completeness constraints rules applied.
3- No disjointness constraints rules applied.
4- No discriminator attribute created.
5- Please follow Lab 1 feedback.
6- Also follow Lab 2 directions.
Prior Requirements:
Need help updating the following ER Diagram. With the following requirements:
We consider Elijay Community Hospital employs both full
-
time and part
-
time staff for this lab.
There are also two types of patients at the hospital: inpatients and outpatients.
1
.
Make sure you apply the feedback from Lab
1
to your E
/
R diagram from Lab
1
.
2njkhh and
.
Please complete lab
1
with the extended E
/
R diagram diagram
(
EER diagram
)
,
considering Ellijay Community Hospital hires both full
-
time and part
-
time staff. There are also two types of patients at the hospital: inpatients and outpatients.
Feedback:
-
There is a many
-
to
-
many relationship between the Patient and Personnel entities.
3
-
There is a one
-
to
-
many relationship between Department and Personnel
4
-
The phone attribute of the patient entity is a multi
-
valued attribute. The double oval is a notation for it
.
5
-
The email attribute for Personnel Entity is also a multi
-
valued attribute. The double oval is used for it
.
6
-
Name and Address are composite attributes. Name
(
last
_
name, first
_
name
)
,
Address
(
street
,
city, state, zip code
)
.
Current Updated Requirements:
- Normalize the ER/EER diagram create a Normalized ER (NER) diagram.
To normalize the ER diagram, follow these instructions:
What we did so far is ER/EER diagrams. In order to do ER, our only concern is to capture right
entities with right attributes and right relationships between entities. Also we like to figure out
the general cardinality of relations.
After we are done with ER/EER, it is time to do some normalization. We can break the process
of normalization into two steps. First step is to normalize attributes, and second step is to
normalize relationships between entities.
NER Step 1:
Attribute Normalization is the process of turning compound attributes and multivalued
attributes into entities and establish a relationship between these new entities and the base
entity.
Use only 1st normal form (1NF) along with associative entity.
Feedback and new requirements need to be addressed.
image text in transcribed

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Formal SQL Tuning For Oracle Databases Practical Efficiency Efficient Practice

Authors: Leonid Nossov ,Hanno Ernst ,Victor Chupis

1st Edition

3662570564, 978-3662570562

More Books

Students also viewed these Databases questions