Course Registration System ER Diagram | Entity Reltionship Diagram

Course Registration System ER Diagram

The Course Registration System ER Diagram reveals the relationships between the system’s entity sets that complete the database design. This displays the logical structure of databases. It is done by identifying entities, their properties, and the interactions between them.

The Course Registration System database design is sketched out using ER diagrams. This database sketch for a course registration system is made up of entities, their attributes, and their relationships.

Course Registration System ER Diagram: Details

The table shows the name and details of the Course Registration System ER Diagram. It has a complete description of the project’s information.

Name:Course Registration System ER Diagram
Abstract:Course Registration 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:School Registrar, Staff, and Students.
Course Registration System ER Diagram – Details

What is a Course Registration System?


A course registration system was created to allow students to be registered in the course of their choice. When compared to other forms that students have to fill out by hand, the registration form is easy to use and quick to fill out. This saves time and money.

The course registration system helps students find out what they need to know about a course so they can quickly sign up for it. This course registration method eliminates the need to physically fill out paper forms and mail them to a registration office. With this method, the student can sign up whenever they want and submit their information quickly online.

Definition of ER Diagram

The Course Registration System ER Diagram is referred to as the software 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.

The ER Diagram is used to build and troubleshoot the System’s relational database. It works best with DFD (Data Flow Diagram), which is responsible for data movement.

Importance of ER Diagram

The importance of ER diagram for course registration 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).

Course Registration System ER Diagram

ER Diagram of Course Registration System shows the system entity and the supposed functions in each relationship. It is the supposed database design of the project. This conveys the data that would be present in the registration system, its characteristics, and its connection with other data (entity).

ER Diagram for Course Registration System
ER Diagram for Course Registration System

This diagram presents the entities’ relational model for the course registration system. It is used to enlighten you on how the back end of the database of the project works. The tables are made to meet the required specification of the system and provide much more specific details of each entity within the system.

ER Diagram for Course Registration System with Tables

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

Table Name: Registrar

registrar_ID (PK)Registrar IDInt11
nameRegistrar NameVarchar255
ageRegistrar AgeInt11
genderRegistrar GenderVarchar255
contactRegistrar Contact Int11
addressRegistrar AddressText
usernameRegistrar UsernameVarchar255
passwordRegistrar PasswordVarchar255
Table Name: Registrar

Table Name: Course

course_ID (PK)Course IDInt11
nameCourse NameVarchar255
descriptionCourse DescriptionText
subjectsCourse SubjectsText
pre-requisitesCourse Pre-requisitesText
registrees_ID (FK)Registrees IDInt11
Table Name: Course

Table Name: Requirements

requirements_ID (PK)Requirements ID (PK)Int11
registration_Id (FK)Registration ID (FK)Int11
course_ID (FK)Course ID (FK)Int11
birth_certBirth CertificateVarchar255
prev_gradesPrevious GradesVarchar255
good_moralGood MoralVarchar255
sub_dateSubmission DateDate
Table Name: Requirements

Table Name: Registration

registration_ID (PK)Registration IDInt11
fnameFirst NameInt11
lnameLast NameInt11
course_ID (FK)Course IDInt11
Table Name: Registration

Table Name: Registrees

registrees_ID (PK)Registrees IDInt11
registration_ID (FK)Registration IDInt11
course_ID (FK)Course IDInt11
requirements_ID (FK)Requirements IDInt11
Table Name: Registrees

The tables given will be the basis for developers on how would they do the course registration 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.

ER Diagram for Course Registration System [PDF]

The ER Diagram for Course Registration 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 with Cardinality Ratio

Time needed: 5 minutes.

Steps in building the ER Diagram for Course Registration System with Cardinality Ratio.

  • Step 1: Familiarize the ER (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 blood bank management 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 management 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 blood bank management system er diagram. These attributes can be a primary key or a foreign key in the database design of the project. Yoy 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 Course Registration 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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