Hospital Management System
DATABASE DESIGN
1. Description
A database is a collection of information and is systematically
stored in tables in the form of rows and columns. The table in the
database has unique name that identifies its contents. The
database in turn is further described in detail giving all the fields
used with the data types, constraints available, primary key and
foreign key.
Database design is used to manage large bodies of information.
In this database we describe all the 4 tables available in the
software, which are used to store all the records.
2. Data types and its description:
Fields in database table have a data type. Some of the data
types used in database table are explained below.
a) Integer:One optional sign character (+ or -) followed by atleast one digit
(0-9). Leading and trailing blanks are ignored. No other character
is allowed.
b) Varchar:It is used to store alpha numeric characters. In this data type
we can set the maximum number of characters upto 8000 ranges
by default SQL server will set the size to 50 characters large.
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Hospital Management System
c) Date/Time:Date/Time data type is used for representing data or time.
Patient Table:
Fields
Data Type
Relationships
Pid
name
age
weight
gender
address
phoneno
disease
doctorid
Varchar(5)
Varchar(20)
int
int
Varchar(10)
Varchar(50)
int
Varchar(20)
Varchar(5)
Primary Key
Not Null
Not Null
Not Null
Not null
Not Null
Not Null
Not Null
Not Null
Doctor Table:
Fields
Data Type
Relationships
doctorid
doctorname
dept
Varchar(5)
Varchar(15)
Varchar(15)
Primary Key
Not Null
Not Null
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Hospital Management System
Lab Table:
Fields
Data Type
Relationships
labno
pid
weight
doctorid
date
category
Varchar(5)
Varchar(5)
int
Varchar(5)
Date/Time
Varchar(15)
Primary Key
Not Null
Not Null
Foreign Key
Not Null
Not Null
patient_type
Varchar(15)
Not Null
amount
int
Not Null
Inpatient Table:
Fields
Data Type
Relationships
pid
room_no
date_of_adm
date_of_dis
advance
labno
Varchar(5)
Varchar(50)
Date/Time
Date/Time
int
Varchar(5)
Primary Key
Not Null
Not Null
Not Null
Not Null
Foreign Key
Outpatient Table:
Fields
Data Type
Relationships
pid
date
labno
Varchar(5)
Date/Time
Varchar(5)
Primary Key
Not Null
Foreign Key
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Hospital Management System
Room Table:
Fields
Data Type
Relationships
room_no
room_type
status
Varchar(50)
Varchar(10)
Varchar(10)
Primary Key
Not Null
Not Null
Bill Table:
Fields
Data Type
Relationships
bill_no
pid
patient_type
doctor_charge
medicine_charge
room_charge
oprtn_charge
no_of_days
nursing_charge
advance
health_card
lab_charge
bill
Varchar(50)
Varchar(5)
Varchar(10)
int
int
int
int
int
int
int
Varchar(50)
int
int
Primary Key
Foreign Key
Allow Null
Not Null
Not Null
Not Null
Allow Null
Allow Null
Allow Null
Allow Null
Allow Null
Allow Null
Not Null
E-R Diagram
Entity relationship diagram is used in modern database
software engineering to illustrate logical structure of database. It
is a relational schema database modeling method used to model
a system and approach. This approach commonly used in
database design. The diagram created using this method is called
E-R diagram.
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Hospital Management System
The E-R diagram depicts the various relationships among
entities considering each object as entity. Entity is represented as
diamond shape and relationship is represented as rectangle. It
depicts the relationship between data objects. The E-R diagram is
the relation that is used to conduct the data modeling activity.
Entity:Entity is the thing which we want to store information. It is an
elementary basic building block of storing information about
business process. An entity represents an objects defined within
the information system about which you want to store
information.
Relationship:A relationship is named connection or association between
entities used to relate two or more entities with some common
attributes of meaningful interaction between the object.
Attributes:Attributes are the properties of the entities and relationship.
Descriptor of the entity. Attributes are elementary pieces of
information attached to an entity.
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Hospital Management System
Symbols
Meaning
Entity
Relationship
Attribute
Key Attribute
E1
R
E2
Cardinality Ratio N: 1 for E1:
E2 in R
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Hospital Management System
E-R Diagram
pid
name
age
weight
gender
doctorid
patient
address
phone
no
disease
Consults
Doctorid
dept
doctor
Doctor name
amount
Checks
lab no
category
Pid
date
lab Report
weight
pid
date of
admission
inpatient
room no
room type
pid
lab no
outpatient
lab no
date
room no
date of
discharge
status
doctorid
Decides
advance
Admitted to
to
room
bill no
issued_to
medicine charge
pid
room charge
lab charge
bill
patient type
operation charge
bill
no of days
nursing charge
health
card
25
advance
doctor charge