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<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Registration Application ERD</title>
<script src="https://cdn.tailwindcss.com"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
<style>
.entity {
transition: all 0.3s ease;
}
.entity:hover {
transform: translateY(-5px);
box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}
.relationship-line {
position: absolute;
background-color: #6b7280;
transform-origin: left center;
}
.diagram-container {
min-height: 600px;
overflow: auto;
}
@media (max-width: 768px) {
.diagram-container {
transform: scale(0.7);
transform-origin: top left;
width: 140%;
}
}
</style>
</head>
<body class="bg-gray-50">
<div class="container mx-auto px-4 py-8">
<header class="mb-8 text-center">
<h1 class="text-3xl md:text-4xl font-bold text-indigo-700 mb-2">Registration Application Database Design</h1>
<p class="text-gray-600 max-w-2xl mx-auto">Entity Relationship Diagram for a comprehensive registration system</p>
<div class="mt-4 flex justify-center space-x-4">
<button id="toggle-view" class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 transition">
<i class="fas fa-exchange-alt mr-2"></i>Toggle View
</button>
<button id="download-btn" class="px-4 py-2 bg-green-600 text-white rounded-lg hover:bg-green-700 transition">
<i class="fas fa-download mr-2"></i>Download Diagram
</button>
</div>
</header>
<div class="bg-white rounded-xl shadow-lg p-6 mb-8">
<div class="diagram-container relative" id="erd-diagram">
<!-- Main Entities -->
<div class="entity absolute top-20 left-1/4 w-64 bg-blue-50 border-2 border-blue-300 rounded-lg p-4 shadow-md" data-entity="applicant">
<div class="flex justify-between items-center mb-2">
<h3 class="font-bold text-blue-800 text-lg">Applicant</h3>
<i class="fas fa-user text-blue-500"></i>
</div>
<ul class="text-sm text-gray-700 space-y-1">
<li><span class="font-semibold">applicant_id</span> (PK)</li>
<li>first_name</li>
<li>last_name</li>
<li>date_of_birth</li>
<li>gender</li>
<li>email</li>
<li>phone</li>
<li>address</li>
<li>created_at</li>
<li>updated_at</li>
</ul>
</div>
<div class="entity absolute top-20 right-1/4 w-64 bg-purple-50 border-2 border-purple-300 rounded-lg p-4 shadow-md" data-entity="application">
<div class="flex justify-between items-center mb-2">
<h3 class="font-bold text-purple-800 text-lg">Application</h3>
<i class="fas fa-file-alt text-purple-500"></i>
</div>
<ul class="text-sm text-gray-700 space-y-1">
<li><span class="font-semibold">application_id</span> (PK)</li>
<li><span class="font-semibold">applicant_id</span> (FK)</li>
<li>application_date</li>
<li>status</li>
<li>program_type</li>
<li>term</li>
<li>year</li>
<li>submission_date</li>
<li>review_date</li>
<li>decision_date</li>
</ul>
</div>
<div class="entity absolute top-80 left-1/4 w-64 bg-green-50 border-2 border-green-300 rounded-lg p-4 shadow-md" data-entity="document">
<div class="flex justify-between items-center mb-2">
<h3 class="font-bold text-green-800 text-lg">Document</h3>
<i class="fas fa-file-upload text-green-500"></i>
</div>
<ul class="text-sm text-gray-700 space-y-1">
<li><span class="font-semibold">document_id</span> (PK)</li>
<li><span class="font-semibold">application_id</span> (FK)</li>
<li>document_type</li>
<li>file_name</li>
<li>file_path</li>
<li>upload_date</li>
<li>verified</li>
<li>verification_date</li>
</ul>
</div>
<div class="entity absolute top-80 right-1/4 w-64 bg-yellow-50 border-2 border-yellow-300 rounded-lg p-4 shadow-md" data-entity="payment">
<div class="flex justify-between items-center mb-2">
<h3 class="font-bold text-yellow-800 text-lg">Payment</h3>
<i class="fas fa-credit-card text-yellow-500"></i>
</div>
<ul class="text-sm text-gray-700 space-y-1">
<li><span class="font-semibold">payment_id</span> (PK)</li>
<li><span class="font-semibold">application_id</span> (FK)</li>
<li>amount</li>
<li>payment_date</li>
<li>payment_method</li>
<li>transaction_id</li>
<li>status</li>
<li>receipt_number</li>
</ul>
</div>
<div class="entity absolute top-80 left-1/2 transform -translate-x-1/2 w-64 bg-red-50 border-2 border-red-300 rounded-lg p-4 shadow-md" data-entity="education">
<div class="flex justify-between items-center mb-2">
<h3 class="font-bold text-red-800 text-lg">Education</h3>
<i class="fas fa-graduation-cap text-red-500"></i>
</div>
<ul class="text-sm text-gray-700 space-y-1">
<li><span class="font-semibold">education_id</span> (PK)</li>
<li><span class="font-semibold">applicant_id</span> (FK)</li>
<li>institution_name</li>
<li>degree</li>
<li>field_of_study</li>
<li>start_date</li>
<li>end_date</li>
<li>gpa</li>
<li>country</li>
</ul>
</div>
<div class="entity absolute top-440 left-1/4 w-64 bg-indigo-50 border-2 border-indigo-300 rounded-lg p-4 shadow-md" data-entity="reference">
<div class="flex justify-between items-center mb-2">
<h3 class="font-bold text-indigo-800 text-lg">Reference</h3>
<i class="fas fa-user-friends text-indigo-500"></i>
</div>
<ul class="text-sm text-gray-700 space-y-1">
<li><span class="font-semibold">reference_id</span> (PK)</li>
<li><span class="font-semibold">application_id</span> (FK)</li>
<li>name</li>
<li>email</li>
<li>phone</li>
<li>relationship</li>
<li>institution</li>
<li>position</li>
<li>submission_status</li>
</ul>
</div>
<div class="entity absolute top-440 right-1/4 w-64 bg-pink-50 border-2 border-pink-300 rounded-lg p-4 shadow-md" data-entity="test_score">
<div class="flex justify-between items-center mb-2">
<h3 class="font-bold text-pink-800 text-lg">Test Score</h3>
<i class="fas fa-star text-pink-500"></i>
</div>
<ul class="text-sm text-gray-700 space-y-1">
<li><span class="font-semibold">test_score_id</span> (PK)</li>
<li><span class="font-semibold">applicant_id</span> (FK)</li>
<li>test_type</li>
<li>score</li>
<li>test_date</li>
<li>reporting_date</li>
<li>valid_until</li>
</ul>
</div>
<!-- Relationships -->
<div class="relationship-line" id="line1" style="width: 100px; height: 2px; top: 120px; left: 280px;"></div>
<div class="relationship-line" id="line2" style="width: 2px; height: 180px; top: 120px; left: 380px;"></div>
<div class="relationship-line" id="line3" style="width: 100px; height: 2px; top: 300px; left: 280px;"></div>
<div class="relationship-line" id="line4" style="width: 100px; height: 2px; top: 300px; left: 480px;"></div>
<div class="relationship-line" id="line5" style="width: 2px; height: 180px; top: 120px; left: 580px;"></div>
<div class="relationship-line" id="line6" style="width: 100px; height: 2px; top: 300px; left: 580px;"></div>
<div class="relationship-line" id="line7" style="width: 2px; height: 120px; top: 300px; left: 680px;"></div>
<!-- Relationship labels -->
<div class="absolute top-150 left-360 bg-white px-2 py-1 rounded text-xs font-bold text-gray-700">1 to N</div>
<div class="absolute top-220 left-280 bg-white px-2 py-1 rounded text-xs font-bold text-gray-700">1 to N</div>
<div class="absolute top-220 left-480 bg-white px-2 py-1 rounded text-xs font-bold text-gray-700">1 to N</div>
<div class="absolute top-150 left-580 bg-white px-2 py-1 rounded text-xs font-bold text-gray-700">1 to N</div>
<div class="absolute top-220 left-580 bg-white px-2 py-1 rounded text-xs font-bold text-gray-700">1 to N</div>
<div class="absolute top-360 left-680 bg-white px-2 py-1 rounded text-xs font-bold text-gray-700">1 to N</div>
</div>
</div>
<div class="grid grid-cols-1 md:grid-cols-2 gap-6 mb-8">
<div class="bg-white rounded-xl shadow-lg p-6">
<h2 class="text-xl font-bold text-gray-800 mb-4">Database Schema Explanation</h2>
<ul class="space-y-3">
<li class="flex items-start">
<span class="bg-blue-100 text-blue-800 p-1 rounded mr-2"><i class="fas fa-user"></i></span>
<div>
<h3 class="font-semibold">Applicant</h3>
<p class="text-sm text-gray-600">Stores personal information about individuals applying for registration.</p>
</div>
</li>
<li class="flex items-start">
<span class="bg-purple-100 text-purple-800 p-1 rounded mr-2"><i class="fas fa-file-alt"></i></span>
<div>
<h3 class="font-semibold">Application</h3>
<p class="text-sm text-gray-600">Tracks each application submission with status and timeline information.</p>
</div>
</li>
<li class="flex items-start">
<span class="bg-green-100 text-green-800 p-1 rounded mr-2"><i class="fas fa-file-upload"></i></span>
<div>
<h3 class="font-semibold">Document</h3>
<p class="text-sm text-gray-600">Manages all supporting documents uploaded with each application.</p>
</div>
</li>
<li class="flex items-start">
<span class="bg-yellow-100 text-yellow-800 p-1 rounded mr-2"><i class="fas fa-credit-card"></i></span>
<div>
<h3 class="font-semibold">Payment</h3>
<p class="text-sm text-gray-600">Records all payment transactions related to application fees.</p>
</div>
</li>
</ul>
</div>
<div class="bg-white rounded-xl shadow-lg p-6">
<h2 class="text-xl font-bold text-gray-800 mb-4">Key Relationships</h2>
<ul class="space-y-3">
<li class="flex items-start">
<span class="bg-red-100 text-red-800 p-1 rounded mr-2"><i class="fas fa-graduation-cap"></i></span>
<div>
<h3 class="font-semibold">Education</h3>
<p class="text-sm text-gray-600">Stores academic history of applicants with institution details.</p>
</div>
</li>
<li class="flex items-start">
<span class="bg-indigo-100 text-indigo-800 p-1 rounded mr-2"><i class="fas fa-user-friends"></i></span>
<div>
<h3 class="font-semibold">Reference</h3>
<p class="text-sm text-gray-600">Manages reference contacts provided by applicants.</p>
</div>
</li>
<li class="flex items-start">
<span class="bg-pink-100 text-pink-800 p-1 rounded mr-2"><i class="fas fa-star"></i></span>
<div>
<h3 class="font-semibold">Test Score</h3>
<p class="text-sm text-gray-600">Tracks standardized test scores submitted by applicants.</p>
</div>
</li>
<li class="flex items-start">
<span class="bg-gray-100 text-gray-800 p-1 rounded mr-2"><i class="fas fa-project-diagram"></i></span>
<div>
<h3 class="font-semibold">Relationships</h3>
<p class="text-sm text-gray-600">All entities relate back to Applicant and Application with 1-to-many relationships.</p>
</div>
</li>
</ul>
</div>
</div>
<div class="bg-white rounded-xl shadow-lg p-6">
<h2 class="text-xl font-bold text-gray-800 mb-4">SQL Schema Generation</h2>
<div class="bg-gray-100 p-4 rounded-lg overflow-x-auto">
<pre class="text-sm text-gray-800">
-- Applicant Table
CREATE TABLE applicants (
applicant_id SERIAL PRIMARY KEY,
first_name VARCHAR(100) NOT NULL,
last_name VARCHAR(100) NOT NULL,
date_of_birth DATE NOT NULL,
gender VARCHAR(20),
email VARCHAR(255) NOT NULL UNIQUE,
phone VARCHAR(50),
address TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
-- Application Table
CREATE TABLE applications (
application_id SERIAL PRIMARY KEY,
applicant_id INTEGER REFERENCES applicants(applicant_id),
application_date DATE NOT NULL,
status VARCHAR(50) NOT NULL,
program_type VARCHAR(100),
term VARCHAR(50),
year INTEGER,
submission_date TIMESTAMP,
review_date TIMESTAMP,
decision_date TIMESTAMP
);
-- Document Table
CREATE TABLE documents (
document_id SERIAL PRIMARY KEY,
application_id INTEGER REFERENCES applications(application_id),
document_type VARCHAR(100) NOT NULL,
file_name VARCHAR(255) NOT NULL,
file_path TEXT NOT NULL,
upload_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
verified BOOLEAN DEFAULT FALSE,
verification_date TIMESTAMP
);
-- Payment Table
CREATE TABLE payments (
payment_id SERIAL PRIMARY KEY,
application_id INTEGER REFERENCES applications(application_id),
amount DECIMAL(10,2) NOT NULL,
payment_date TIMESTAMP NOT NULL,
payment_method VARCHAR(50),
transaction_id VARCHAR(100),
status VARCHAR(50) NOT NULL,
receipt_number VARCHAR(100)
);
-- Education Table
CREATE TABLE education (
education_id SERIAL PRIMARY KEY,
applicant_id INTEGER REFERENCES applicants(applicant_id),
institution_name VARCHAR(255) NOT NULL,
degree VARCHAR(100),
field_of_study VARCHAR(255),
start_date DATE,
end_date DATE,
gpa DECIMAL(3,2),
country VARCHAR(100)
);
-- Reference Table
CREATE TABLE references (
reference_id SERIAL PRIMARY KEY,
application_id INTEGER REFERENCES applications(application_id),
name VARCHAR(255) NOT NULL,
email VARCHAR(255),
phone VARCHAR(50),
relationship VARCHAR(100),
institution VARCHAR(255),
position VARCHAR(255),
submission_status VARCHAR(50) DEFAULT 'Pending'
);
-- Test Score Table
CREATE TABLE test_scores (
test_score_id SERIAL PRIMARY KEY,
applicant_id INTEGER REFERENCES applicants(applicant_id),
test_type VARCHAR(100) NOT NULL,
score VARCHAR(50),
test_date DATE,
reporting_date DATE,
valid_until DATE
);
</pre>
</div>
</div>
<div class="bg-white rounded-xl shadow-lg p-6 mt-8">
<h2 class="text-xl font-bold text-gray-800 mb-4">Database Operations</h2>
<div class="grid grid-cols-1 md:grid-cols-2 gap-6">
<div>
<h3 class="font-semibold mb-3">Add New Applicant</h3>
<form id="applicant-form" class="space-y-4">
<div>
<label class="block text-sm font-medium text-gray-700">First Name</label>
<input type="text" name="first_name" required class="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500">
</div>
<div>
<label class="block text-sm font-medium text-gray-700">Last Name</label>
<input type="text" name="last_name" required class="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500">
</div>
<div>
<label class="block text-sm font-medium text-gray-700">Email</label>
<input type="email" name="email" required class="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500">
</div>
<button type="submit" class="w-full bg-indigo-600 text-white py-2 px-4 rounded-md hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2">
Submit Applicant Data
</button>
</form>
</div>
<div>
<h3 class="font-semibold mb-3">Query Database</h3>
<div class="space-y-4">
<select id="entity-select" class="block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500">
<option value="applicants">Applicants</option>
<option value="applications">Applications</option>
<option value="documents">Documents</option>
</select>
<button id="fetch-data" class="w-full bg-green-600 text-white py-2 px-4 rounded-md hover:bg-green-700 focus:outline-none focus:ring-2 focus:ring-green-500 focus:ring-offset-2">
Fetch Data
</button>
<div id="query-results" class="bg-gray-100 p-4 rounded-md overflow-auto max-h-60 hidden">
<pre class="text-sm text-gray-800"></pre>
</div>
</div>
</div>
</div>
</div>
</div>
<script>
=======
2. Now let's add the backend connection functionality to the script section:
<<<<<<< SEARCH
});
});
</script>
=======
});
// Backend connection functionality
const API_BASE_URL = 'http://localhost:3000/api'; // Update with your backend URL
// Handle applicant form submission
document.getElementById('applicant-form').addEventListener('submit', async function(e) {
e.preventDefault();
const formData = new FormData(this);
const data = Object.fromEntries(formData.entries());
try {
const response = await fetch(`${API_BASE_URL}/applicants`, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify(data)
});
const result = await response.json();
alert('Applicant added successfully!');
console.log('Success:', result);
} catch (error) {
console.error('Error:', error);
alert('Error submitting applicant data');
}
});
// Handle data fetching
document.getElementById('fetch-data').addEventListener('click', async function() {
const entity = document.getElementById('entity-select').value;
const resultsDiv = document.getElementById('query-results');
const pre = resultsDiv.querySelector('pre');
try {
const response = await fetch(`${API_BASE_URL}/${entity}`);
const data = await response.json();
resultsDiv.classList.remove('hidden');
pre.textContent = JSON.stringify(data, null, 2);
} catch (error) {
console.error('Error:', error);
resultsDiv.classList.remove('hidden');
pre.textContent = 'Error fetching data';
}
});
});
</script>
document.addEventListener('DOMContentLoaded', function() {
// Toggle between compact and detailed view
const toggleViewBtn = document.getElementById('toggle-view');
const entities = document.querySelectorAll('.entity');
let isCompact = false;
toggleViewBtn.addEventListener('click', function() {
isCompact = !isCompact;
entities.forEach(entity => {
if (isCompact) {
entity.classList.add('w-40');
entity.classList.remove('w-64');
entity.querySelector('ul').classList.add('hidden');
} else {
entity.classList.remove('w-40');
entity.classList.add('w-64');
entity.querySelector('ul').classList.remove('hidden');
}
});
toggleViewBtn.innerHTML = isCompact
? '<i class="fas fa-expand mr-2"></i>Expand View'
: '<i class="fas fa-compress mr-2"></i>Compact View';
});
// Download functionality (simulated)
const downloadBtn = document.getElementById('download-btn');
downloadBtn.addEventListener('click', function() {
alert('Diagram download would be initiated here in a real implementation.');
});
// Add hover effects to entities
entities.forEach(entity => {
entity.addEventListener('mouseenter', function() {
const entityType = this.getAttribute('data-entity');
document.querySelectorAll(`[data-entity="${entityType}"]`).forEach(el => {
el.classList.add('ring-2', 'ring-offset-2');
if (entityType === 'applicant') el.classList.add('ring-blue-400');
if (entityType === 'application') el.classList.add('ring-purple-400');
if (entityType === 'document') el.classList.add('ring-green-400');
if (entityType === 'payment') el.classList.add('ring-yellow-400');
if (entityType === 'education') el.classList.add('ring-red-400');
if (entityType === 'reference') el.classList.add('ring-indigo-400');
if (entityType === 'test_score') el.classList.add('ring-pink-400');
});
});
entity.addEventListener('mouseleave', function() {
const entityType = this.getAttribute('data-entity');
document.querySelectorAll(`[data-entity="${entityType}"]`).forEach(el => {
el.classList.remove('ring-2', 'ring-offset-2',
'ring-blue-400', 'ring-purple-400',
'ring-green-400', 'ring-yellow-400',
'ring-red-400', 'ring-indigo-400',
'ring-pink-400');
});
});
});
});
</script>
<p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=wantech/test" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
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