Member Avatar for ravanan88

i am doing attendance monitoring system for student only not for staffs
and only concern lectures have the privilages to mark the attendance (if one staff taking the class then another one cannot mark the attendance for same period

so help me to design er-model and data base design and diagram

stud detail(reg-no,name , addr,sem,prg,batch)
staff detail(staff-id,staff-name,course-id)
course detail(course-id,course-name,prg,batch,sem)
stud register to course(reg-no,course-id,course-name,sem,prg,batch,staff-id)

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  • Latest Post Latest Post by paulinemarie.hedreyda

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A compact, practical ER approach that meets the original constraints (students only; only the lecturer assigned to a period may mark attendance). This expands on ’s normalization/audit advice and ties in device/biometric ideas mentioned by and without repeating field lists already shown in the thread.

Core entities (high level)

  • Student — canonical student record (one row per person).
  • Staff — instructors; used to assign responsibility for offerings and to record who marked attendance.
  • Course and CourseOffering — separate static catalog from term/year offerings; an offering ties a course to a term and an assigned staff member.
  • Enrollment — a student linked to a specific CourseOffering.
  • ClassSession — a scheduled lecture instance (date/time, owner_staff_id, closed_flag).
  • Attendance — one row per (ClassSession, Student) with status, marked_by and marked_at.
  • Audit/ChangeLog and Device (for WiFi/mobile/biometric sources).

Enforcement and integrity (implementation notes)

  • Enforce uniqueness at DB level: one attendance row per session+student (unique index). Record marked_by and marked_at so every change is attributable.
  • Prevent unauthorized marking by making ClassSession.owner_staff_id authoritative: application logic should check ownership before insert/update, and a DB trigger can reject writes when marked_by != owner_staff_id (or record an override into Audit with reason).
  • Keep an immutable Audit table that records who changed an attendance row, when, from what IP/device and why.

Small SQL examples (skeleton)

CREATE UNIQUE INDEX ix_attendance_session_student ON attendance(session_id, student_id);

CREATE TABLE attendance (
  id SERIAL PRIMARY KEY,
  session_id INT NOT NULL REFERENCES class_session(id),
  student_id INT NOT NULL REFERENCES student(id),
  status VARCHAR(16) NOT NULL,
  marked_by INT NOT NULL REFERENCES staff(id),
  marked_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT now()
);

Operational tips and cautions

  • For mobile/WiFi, register devices and use short session tokens or QR codes per ClassSession to prevent spoofing; allow offline marking with later sync and strict reconciliation rules.
  • For biometric readers, store only hashed/template references and log every match event; follow privacy laws and give manual override paths that are fully audited.
  • Build reports that compare enrollments vs. attendance and surface anomalies (bulk edits, repeated late marks). These simple controls plus audited constraints will keep the system reliable and defensible.

Recommended Answers

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Member Avatar for vb5prgrmr

Allowing teachers to have the address of the student could get you into trouble. Also, more than one student could live at the same address. So best bet is to move the address information to another table all by itself. Same can be said for semester information, classes, and so on.

Course information and staff information should be in seperate tables

Course information and year/semester course if offered should be two different tables

Registration to a course should at least have the student ID... (student ID, Class Offering ID (combination of course id and year/semester class offered(3rd table between the two)), Staff ID)


Best bet is to use the old Mark I recording devices (Pencil and Paper) and design yor database to 3rd normal form. Then design in security whether that is going to be front end or back end compliance. After that, for a system like this, you may also want to build in audit tracking so someone can make sure those users are not getting to where they should not be.

Then go into your program design functionality and how it works or will work with your database design.

Good Luck

Member Avatar for ivyg

you know what we have same concept for our thesis but we are only focusing on club

Member Avatar for ivyg

use thumb reader for the registratiion

Member Avatar for ravanan88

sir i need architecture diagram for payroll and Inventory management system
and this is desktop application and have only one user i.e admin only

Modules:
Employee details
Stock details
Attendance details
Payroll details


>In employee we can add,edit,and delete the employee
>In attendance details-this is shift based one.1 shift=8hours, 1.5 shift means 12 hours
payroll is based on attendance only
>Stock details- it include inward and outward stock.

so please help me to design the architecture diagram for thos.

Member Avatar for vb5prgrmr

Well as I have advised others in the past... I suggest that you get out the ole Mark I recording devices (pencil and paper) and write down you data requirements. Normalize your requirements. Then design your interface...

Good Luck

Member Avatar for saranya psr

sir.... i need to know how to design a database for "attendance management system using mobile phones with WiFi connections"

Member Avatar for indianpresley

what about the database design for monitoring and inventory system for a particular physics laboratory... thanks

Member Avatar for Arcie_12

I am A information Technology students and our instructor asked us to do a Entity Relationship Diagram for Attendance System for a company.
Can you please help me to do one?
Your help will be highly appreciated:)

Member Avatar for paulinemarie.hedreyda

i was doing actually a monitoring for back end i need resoures to fulfill our thesis for monitoring repair of gadgets .

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