Hospital Management System Database Design

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. 19

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. 22

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

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advance

doctor charge