Database design
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The document describes the database design for a hospital management system. It includes 4 tables - Patient, Doctor, Lab, and Inpatient/Outpatient. It lists the fields, data types, and relationships for each table. It also provides descriptions of common data types like integer, varchar, and date/time. An entity-relationship diagram is included to depict the relationships between entities like patients, doctors, labs, rooms, and bills.
Database design
- 1. 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
- 2. Hospital Management System c) Date/Time:- Date/Time data type is used for representing data or time. Patient Table: Fields Data Type Relationships Pid Varchar(5) Primary Key Name Varchar(20) Not Null Age int Not Null weight int Not Null gender Varchar(10) Not null address Varchar(50) Not Null phoneno int Not Null disease Varchar(20) Not Null doctorid Varchar(5) Not Null Doctor Table: Fields Data Type Relationships doctorid Varchar(5) Primary Key doctorname Varchar(15) Not Null dept Varchar(15) Not Null 20
- 3. Hospital Management System Lab Table: Fields Data Type Relationships labno Varchar(5) Primary Key Pid Varchar(5) Not Null weight int Not Null doctorid Varchar(5) Foreign Key date Date/Time Not Null category Varchar(15) Not Null patient_type Varchar(15) Not Null amount int Not Null Inpatient Table: Fields Data Type Relationships Pid Varchar(5) Primary Key room_no Varchar(50) Not Null date_of_adm Date/Time Not Null date_of_dis Date/Time Not Null advance int Not Null labno Varchar(5) Foreign Key Outpatient Table: Fields Data Type Relationships Pid Varchar(5) Primary Key date Date/Time Not Null labno Varchar(5) Foreign Key 21
- 4. Hospital Management System Room Table: Fields Data Type Relationships room_no Varchar(50) Primary Key room_type Varchar(10) Not Null status Varchar(10) Not Null Bill Table: Fields Data Type Relationships bill_no Varchar(50) Primary Key Pid Varchar(5) Foreign Key patient_type Varchar(10) Allow Null doctor_charge int Not Null medicine_charge int Not Null room_charge int Not Null oprtn_charge int Allow Null no_of_days int Allow Null nursing_charge int Allow Null advance int Allow Null health_card Varchar(50) Allow Null lab_charge int Allow Null Bill int 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
- 5. 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. 23 Hospital Management System
- 6. Symbols Meaning Entity Relationship Attribute Key Attribute Cardinality Ratio N: 1 for E1: E2 in R 24 Hospital Management System E1 R E2
- 7. E-R Diagram 25 patient pid name weight doctori d gende r age addres s phone no Consult s doctor Doctorid Doctor name dept Check s lab Report lab no Pid weight doctorid date category Decid es inpatient outpatient lab no room no pid advanc e date of admissio n date of discharge pid lab no date Admitted to to room status room no room type issued_ to bill bill no pid lab charge patient type bill doctor chargeadvanc e health card medicine charge room charge operation no of nursing charge disease amount