ER Diagram for Student Management System

The entity-relationship (ER) diagram of Student Management System is a form of flowchart that shows how “entities” within the Student Management System interact with one another. ER Diagram is the blueprint of

Additionally, the relationships between entity sets recorded in a database are depicted in the Student Management System entity-relationship diagram (ERD). Student Management System ER Diagram is composed of entities such as students, courses offered, staff, staff department, student registration, project transactions, and reports.

Student Management System ER Diagram Entities and Attributes

ENTITIESATTRIBUTES
Student:stud_ID (PK), stfname, stlname, stcourse, styear, stcontact, stage, stbirthdate, and stgender
Courses Offered:course_ID (PK), course_desc, units, course_remarks
Staff:staff_ID (PK), fname, lname, contact, address, gender
Staff Department:staff_ID (PK), course_line
Reports:report_ID (PK), reports_name, student_records, transaction_reports
Student Registration:registration_ID (PK), name, content, registration_date
Project Transactions:transaction_ID (PK), transaction_name, stude_ID, staff_ID, transaction_date
Student Management System ER Diagram Entities and Attributes

Student Management System ER (Entity Relationship) Diagram

This ER diagram shows the overall entities in Student Management System. The entities are represented by rectangles, while their attributes are represented by circles or ovals.

Student Management System ER (Entity Relationship) Diagram
Student Management System ER (Entity Relationship) Diagram

Description of Student Management System ER Diagram

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Student Management System ER Diagram employs a predetermined collection of symbols such as rectangles, diamonds, ovals, and connecting lines to illustrate the relatedness of entities, relationships, and their properties. They are organized in the same way that grammar is organized, with nouns for entities and verbs for relationships.

Modeling the data stored in a database requires the use of ER Diagrams. It is the basis upon which a database is built. ER diagram helps in defining the types of data that will be stored in the student management system.

Student Management System Database Design

Here’s the illustration of Student Management System Database Design that is based on ER Diagram. This design has database tables that contain the entities, attributes, and characteristics.

Student Management System Diagram
Student Management System Project Database Design

The Student Management System Database design is the storage of all the data that may enter and exit the system. It organizes the data according to ER Diagram model. The developer or proponent decides what data should be saved and how the various data parts should interact. Developers will map the data to the database design using the entity-relationship diagram model.

Additionally, it generates prototypes of the proposed database system’s logical and physical designs. Independent of physical factors, the logical model focuses on data requirements and data to be stored.

Tables in Student Management System Database Design

The tables below provide the complete database design details such as Field NameDescriptionsdata types, and character lengths of the Student Management System. These roles are used to categorize every piece of data that will be fed into the system to make sure that they were thoroughly managed and secured. Each of the Database tables was used to design the back end of the Student management system.

Table Name: tblStudent

Field Name DescriptionTypeLength
stud_ID (PK)Student ID NumberInt11
stfnameStudent First NameVarchar30
stlnameStudent Last NameVarchar30
stcourseStudent CourseVarchar30
styearStudent YearInt11
stcontactStudent Contact NumberInt11
stageStudent AgeInt11
stbirthdateStudent Birth DateDate
stgenderStudent GenderInt11
Table Name: tblStudent

Table Name: tblCourse

Field NameDescriptionTypeLength
course_ID (PK)Course ID NumberInt11
course_descCourse DescriptionText
unitsCourse UnitsInt11
course_remarksCourse RemarksText
Table Name: tblCourse

Table Name: tblStaff

Field NameDescriptionTypeLength
staff_Id (PK)Staff ID NumberInt 11
fnameStaff First NameVarchar30
lnameStaff Last NameVarchar30
contactStaff Contact NumberInt11
addressStaff AddressVarchar255
genderStaff GenderVarchar30
Table Name: tblStaff

Table Name: tblStaff_Department

Field NameDescriptionTypeLength
staff_ID (PK)Staff ID NumberInt11
course_line (FK)Staff Course LineInt11
Table Name: tblStaff_Department

Table Name: tblProject_Transaction

Field NameDescriptionTypeLength
transaction_ID (PK)Transaction ID NumberInt11
transaction_nameTransaction NameVarchar30
stud_ID (FK)Student ID NumberInt11
staff_ID (FK)Staff ID NumberInt11
transaction_dateTransaction DateDate
Table Name: tblProject_Transaction

Table Name: tblStudent_Registration

Field NameDescriptionTypeLength
registration_IDRegistration ID NumberInt11
nameRegistration NameVarchar30
contentRegistration ContentVarchar30
registration_dateRegistration DateDate
Table Name: tblStudent_Registration

Table Name: tblStudent_Reports

Field NameDescriptionTypeLength
report_ID (PK)Report ID NumberInt11
reports_nameReport NameVarchar30
student_records (FK)Student RecordInt11
transaction_reports (FK)Transaction RecordInt11
Table Name: tblStudent_Reports

How to build ER Diagram for Student Management System?

Time needed: 5 minutes.

Steps in building the ER Diagram for Student Management System.

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

    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-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: Determine the targeted users

    After the symbol familiarization, you’ll need to determine your targeted users. Your targeted users will be the ones to use your project.

    If your project is Student Management System then your users would be the admin, students, and staff. You may ask the users about the common activities that they do when doing tasks in the library. This information will help you in proceeding with the next step.

  • Step 3: Analyze the entities and their included attributes

    Analyzation is very important in creating ER diagram. It will help you understand the work of the diagram and avoid unwanted errors. The gathered information from the users is very useful in creating the diagram. You will evaluate the data and pick the useful ones.

    From this, you will see the possible data that will enter and exit the system. But only include the useful data related to library management. Then you’re ready for the next step.

  • Step 4: Plot the Entity Relationship Diagram

    To plot 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.

    – To design the ER Diagram, you will list first all of the entities related to the Student Management System.
    – Then you will place the attributes included under them. This will help you create the ER Diagram Fields.
    – Do not forget the keys of the attributes. The keys will generate the potential relationships between entities.
    – Finally, you have your ER Diagram Completed.

Conclusion:

You need to know the diagrams used to design and develop the Student Management 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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