Bus Reservation System ER Diagram | ERD

The ER diagram for bus reservation system shows the relationships of the bus reservation entities in its database design. This describes the logical structure of the system’s database or data storage. It is done by identifying the bus reservation process entities, their properties, and the interactions between them.

The database design is sketched out using bus reservation system ER diagrams. This database sketch becomes the actual basis of the system’s data storage that will serve as data destination and source.

Bus Reservation System ER Diagram: Details

The table shows the overall description of the ER Diagram for Bus Reservation System. It has a complete overview of the project’s information.

Name:Bus Reservation System ER Diagram
Abstract:The bus reservation system ER diagram depicts the relationship between various entities. It can be thought of as a blueprint for your system (project) structure. 
Diagram:ER Diagram is also known as Entity Relationship Diagram
Tools Used:Diagraming tools that provide ER diagram symbols.
Users:Website, Applications, and Software.
Bus Reservation System ER Diagram: Details

What is a Bus Reservation System?

Bus Reservation System In C++ free ...
Bus Reservation System In C++ free Download 2020 | C++ Projects with Source Code

A bus reservation system is created to offer clients a personalized, simple-to-use online booking and ticketing experience. It keeps track of customer personal data, frequent travel patterns, scheduled routes, drop-off locations, and other data.

It is a web-based program that enables users to check the availability of bus tickets, purchase bus tickets, and make online bus ticket payments. After receiving access from the administrator, this system is set up for all home/office users.

What is an ER Diagram?

The ER Diagram is referred to as the bus reservation system database design. This ER diagram is the graphical depiction of relationships between all the entities involved in the system. Its major components are Entities, Attributes, and Relationships.

In DBMS, the bus reservation system ER Diagram is used to build and troubleshoot relational databases. It works best with DFD (Data Flow Diagram), which is responsible for data movement. Designing the bus reservation system database would be much easier with the help of ER diagram.

The bus reservation system ER diagram aims to answer the bus reservation database design. The system’s function is to encode customer information and transaction. Also, the bus reservation admin must have access to the customer information for reports and inventory purposes. The data used in these transactions must be managed and secured well and the use of ER Diagram for Bus Reservation System is needed.

Importance of ER Diagram

The importance of ER diagram for bus reservation system is to help in modeling its data storage or database. It is the basis of the project’s database foundation for construction. This entity-relationship diagram (ERD) also aids in defining the data types to be stored such as their attributes and characteristics.

In addition to that, the ER Diagram also describes how an entity interacts with other entities. All other real-world projects are presented with ER Diagrams (database designs). To display the details and attributes of a data store, the er diagram for bus reservation system is used in conjunction with its data flow diagram. They are very important in building a relational database because they let us visualize how data is connected generically.

Entity-relationship diagrams are utilized in software engineering during the planning phase of software development. It aids in the identification of various system constituents and their interrelationships. Bus Reservation System ER Diagram is also used as the foundation of its DFD (Dataflow Diagram)

The database design for bus reservation system is the same as its ER diagram. They were used to emphasize the bus reservation system database or data storage to determine the data to be stored and their attributes. This is to inform developers about the system’s structure in terms of data storing.

Bus Reservation System ER Diagram Description

This Bus Reservation system database was made based on bus reservation requirements. The system can encode customers’ information. The reservation admin can have access to the customers’ status and the information for the important transactions. They can handle the data needed in managing bus and customer information as well as the transactions made.

The features included in the system ER diagram were the security and monitoring of the reservation transactions and customer status. These features were also listed and recorded in reports that served as the history of transactions done in the system.

Bus Reservation System Features

  • Reservation Management – The process of bus reservation includes some considerations such as choosing of date, time, and destination. these are the important details that the system can store and put into reservation transactions.
  • Customer Management – This feature plays a big role in the system because this gathers important information about the customers. This information was used to track their transactions and other important matters regarding the system.
  • Manage Bus Availability – In order to create and accept reservations, the bus availability must also be secured to ensure that there is an available seat for the customers. This database design for the Bus reservation system shows where these data are stored and secured.
  • Transaction and Reports Management – This feature will store the transactions made by the customers including their information and the reports of every transaction and timetables.

ER Diagram for Bus Reservation System

ER (entity-relationship) Diagram of Enrollment System shows the system entity relationships in each entity and their supposed functions in each relationship.

Bus Reservation System ER Diagram
Bus Reservation System ER Diagram

Based on the image above, the ER diagram for this System is the entity of the Bus Reservation system database, which is presented in tables; bus, passenger, reservation, payment, driver, and transaction reports.

The tables are made to meet the required specification of the system and provide much more specific details of each entity within the system.

Bus Reservation System ER Diagram Tables

These tables below provide the complete database table details such as Field Name, Descriptions, data types, and character lengths.

Table Name: Customer

customer_ID (PK)Customer IDInt11
fnameCustomer First NameVarchar255
lnameCustomer Last NameVarchar255
genderCustomer GenderInt11
ageCustomer AgeInt11
contact_addCustomer Contact AddressInt11
Table Name: Customer

Table Name: Bus

bus_ID (PK)Bus IDInt11
bus_numberBus NumberInt11
bus_statusBus StatusVarchar255
bus_seatsBus Number of SeatsInt11
driver_ID (FK)Driver IDInt11
Table Name: Bus

Table Name: Orders/Reservation

order_ID (PK)Order IDInt11
customer_ID (FK)Customer IDInt11
order_dateDate of OrderDate
Table Name: Orders/Reservation

Table Name: Driver

driver_ID (PK)Driver IDInt11
nameDriver NameVarchar255
bus_ID (FK)Bus IDInt11
Table Name: Driver

Table Name: Reservation

reservation_ID (PK)Reservation IDInt11
customer_ID (FK)Customer IDInt11
bus_IDBus IDInt 11
departure_timeTime of DepartureDate Time
reservation_dateDate of ReservationDate
Table Name: Reservation

Table Name: Payment

payment_ID (PK)Payment IDInt11
customer_ID (FK)Customer IDInt11
reservation_ID (FK)Reservation Id Varchar11
payment_dateDate of PaymentDateInt
Table Name: Payment

Table Name: Transaction Report

report_ID (PK)Report IDInt11
customer_ID (FK)Customer ID Int11
reservation_ID (FK)Reservation IDInt11
payment_ID (FK)Payment IDInt11
report_dateDate of ReportDate
Table Name: Transaction Report

The tables given will be the basis for developers on how would they create the bus reservation system database design. It has the complete description of the database and they will put this into the program or data storage the same as the names given to each of the tables. They will create a database with the attributes given as well as the value of each attribute.

Bus Reservation System ERD [PDF]

The ER diagram for bus reservation system PDF provides the information explaining the concepts of the project database. You may apply this information to your capstone project. You can also use it directly or modify its content depending on your project’s requirements.

How to create ER Diagram

Time needed: 5 minutes.

Steps in building the ER Diagram for Bus Reservation System with Cardinality Ratio.

  • Step 1: Familiarize the ER Diagram (Entity Relationship Diagram) Symbols and Cardinality

    Entity Relationship Diagram – shows the structure of data types in a project. It uses symbols to clarify its parts and relationships. Their symbols and applications must be familiarized before you build the ER Diagram.

    ER Diagram Symbols:
    Fields: Fields are the parts of a table that define the entity’s characteristics. In the database that the ERD models, attributes are commonly thought of as rows.
    • Keys is a technique to categorize data qualities. It is used to organize ER diagrams and assist users in modeling their databases to ensure that they are efficient. This is also used to connect different tables in a database.
    – Primary Key: identifies a single entity instance which means a unique attribute or set of attributes.
    – Foreign Key: is produced when data attributes have one too many relationships with other entities.

    ER Diagram Cardinalities:
    The styling of a line and its termination demonstrates cardinality and ordinality.
    The greatest number of times an instance of one thing can be related to instances of another entity is referred to as cardinality.
    While Ordinality refers to the fewest number of times a single entity instance can be linked to another.

  • Step 2: Finalize the entities included

    Start designing your ER Diagram by finalizing the entities that must be included in your bank reservation system. This entity is represented by a rectangle, and you’ll want to leave plenty of room for them in future phases so you may add them to your design.

    An entity set is a group of similar entities with shared properties. A table or a table’s attribute is an entity in a database reservation system. As a result, by depicting relationships between tables and their characteristics, an ER diagram displays the whole logical structure of a database.

  • Step 3: Add the attributes of each entity

    After finalizing the entities, think about the qualities you’ll need to characterize each entity. The details of the various entities outlined in a conceptual ER diagram are supplied as attributes. Characteristics of an entity, a many-to-many relationship, or a one-to-one relationship are all examples of attributes. Multivalued attributes can be assigned to several values.

    The entity’s attributes were represented by ovals and can be seen in the tables of the bank reservation system er diagram. These attributes can be a primary key or a foreign key in the database design of the project. Your ER diagram design could also be converted to the database of the system by declaring your right entities and their attributes.

  • Step 4: Describe the relationships (cardinality) between entities and attributes

    To plot relationships between the ERD you will need the entities, their attributes, and relationships. You will base the data structure from the evaluated information to have the exact Entity Relationship Diagram.

    A relationship is an association that describes how two entities interact. At the connector’s endpoints, the cardinality is indicated by a crow’s foot. One-to-one, one-to-many, and many-to-many are the three most common cardinal relationships. It’s the maximum number of times an instance of one entity can be linked to instances of another entity.


You need to know the diagrams used to design and develop the Bus Reservation System. That is to help you create a fully-functional system with the use of ER Diagram. Creating it will help you perceive the back end of the software. This will hold all the data that’ll enter and exit the system.

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