The attendance management system ER diagram reveals the relationships of the system’s entities to create its database design. It is also used to describe the logical structure of the system’s database or data storage.
Designing an ER diagram is done by identifying the system’s entities, their properties, and interactions.
Moreover, the database design is sketched out using attendance management system ER diagrams. The database sketch then becomes the actual basis of the system’s data storage. This will also serve as the data destination and source.
The table shows the overall description of the ER diagram for Attendance Management System. It has a complete overview of the project’s information. Attendance Management System ER Diagram
Based on the image above, the ER diagram for Attendance System is presented in tables. The tables include student, course, subject, present, absent, and reports.
For instance, the tables are made to meet the required specification of the system and provide much more specific details of each entity within the system.
These tables below provide the complete details such as Field Name, Descriptions, data types, and character lengths. Each of these tables represents the characteristics and the attributes of data storage.
Specifically, the field column presents the names of each database’s attributes, the description column gives the complete thought of each attribute, the type column is their data type and the length is for their character lengths.
All in all, the tables are given to be the basis for developers on how would they design the attendance management system database. It has a complete description of the database. Then the developers will put this into the program.
The ER Diagram for Attendance Management System PDF explains the concepts of the project database. In fact, 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.
Time needed: 5 minutes
First, you need to familiarize the needed symbols.
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 also known as rows.
• Keys is a technique to categorize data qualities. It is used to organize ER diagrams and assist users in modeling their databases. 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.
Next, is to add the attributes to each entity. Think about the qualities you’ll need to characterize an entity. The details of the various entities outlined in a conceptual ER diagram are supplied as attributes.
Finally, plot relationships between the entities.
A relationship is an association that describes how the entities interact. Additionally, the cardinality is indicated by a crow’s foot at the connector’s endpoints.
Specifically, one-to-one, one-to-many, and many-to-many are the three most common cardinal relationships. It’s the maximum number of times that one entity can be linked to another entity.
In conclusion, the ER diagram is not only applied for Attendance Management System Database Design but also the foundation of other diagrams. This diagram is modeled to specify the exact destination and source of data.
Furthermore, the entity-relationship diagram (ERD) is considered a very important part of system development. That is because ERD serves as the project backbone. So, If you want more knowledge about ER Diagrams, you can also visit the Related Articles.
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