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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>DBMS Illustrated — Interactive Database Management Systems Course</title>
<meta name="description" content="Learn DBMS through interactive animations, live canvas demos, and visual explanations. 12 in-depth topics, zero frameworks.">
<script>try{var t=localStorage.getItem('dbms-theme')||'dark';document.documentElement.setAttribute('data-theme',t)}catch(e){document.documentElement.setAttribute('data-theme','dark')}</script>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<div class="reading-progress" id="reading-progress"></div>
<nav class="navbar">
<div class="navbar-inner">
<a class="navbar-brand" href="index.html">
<span class="brand-icon" style="font-size:1.1rem;color:var(--primary-soft)">◆</span>
DBMS Illustrated
</a>
<div class="navbar-links">
<a href="#topics">Topics</a>
<a href="topics/12-interview-guide.html">Interview Guide</a>
<a href="https://github.com/sridhar-3009/DBMS-Course" target="_blank">GitHub</a>
</div>
<div class="navbar-actions">
<button class="btn-icon" id="theme-toggle" title="Toggle theme">☼</button>
</div>
</div>
</nav>
<!-- ── Hero ────────────────────────────────────────────────── -->
<section class="hero">
<div class="hero-inner">
<div class="hero-badge">
<span class="hero-badge-dot"></span>
Learn databases the visual way
</div>
<h1>Complex data,<br><em>simply beautiful.</em></h1>
<p class="hero-sub">An original, animated course on database management systems. From your first ER diagram to acing the system design interview — every concept illustrated, every trade-off named.</p>
<div class="hero-ctas">
<a href="#topics" class="btn-primary">Start Learning</a>
<a href="https://github.com/sridhar-3009/DBMS-Course" class="btn-outline" target="_blank">View on GitHub</a>
</div>
<div class="hero-stats">
<div>
<div class="hero-stat-val">12</div>
<div class="hero-stat-label">Topics</div>
</div>
<div>
<div class="hero-stat-val">12</div>
<div class="hero-stat-label">Live Demos</div>
</div>
<div>
<div class="hero-stat-val">60+</div>
<div class="hero-stat-label">Interview Q&As</div>
</div>
<div>
<div class="hero-stat-val">0</div>
<div class="hero-stat-label">Frameworks</div>
</div>
</div>
</div>
<div class="hero-3d-panel">
<canvas id="hero-canvas" aria-hidden="true"></canvas>
<div class="hero-orbs" aria-hidden="true">
<div class="hero-orb orb-1"></div>
<div class="hero-orb orb-2"></div>
<div class="hero-orb orb-3"></div>
</div>
</div>
<div class="scroll-hint">Scroll</div>
</section>
<!-- ── Stats bar ───────────────────────────────────────────── -->
<div class="stats-bar">
<div class="stat-item"><span class="stat-num">12</span><span class="stat-txt">Topic Modules</span></div>
<div class="stat-item"><span class="stat-num">12</span><span class="stat-txt">Canvas Demos</span></div>
<div class="stat-item"><span class="stat-num">36+</span><span class="stat-txt">Quiz Questions</span></div>
<div class="stat-item"><span class="stat-num">60+</span><span class="stat-txt">Interview Q&As</span></div>
<div class="stat-item"><span class="stat-num">100%</span><span class="stat-txt">Free & Offline</span></div>
</div>
<!-- ── Course grid ─────────────────────────────────────────── -->
<section class="curriculum-section" id="topics">
<div class="curriculum-label">The Curriculum</div>
<h2 class="curriculum-title">Twelve carefully sequenced topics.</h2>
<p class="curriculum-sub">Start at the top or jump to what you need. Every topic includes an animated demo, MCQ quiz, and interview Q&A.</p>
<div class="course-grid">
<a href="topics/01-intro.html" class="course-card" style="--card-color:#0EA5E9">
<div class="card-num">01 — Beginner · 25 min</div>
<div class="card-title">Introduction to DBMS</div>
<p class="card-desc">Architecture, data models, ACID overview, and why databases beat file systems for structured data.</p>
<div class="card-meta">
<span class="card-tag">ER Diagram Demo</span>
<span class="card-tag">Architecture</span>
</div>
</a>
<a href="topics/02-relational-model.html" class="course-card" style="--card-color:#8B5CF6">
<div class="card-num">02 — Beginner · 30 min</div>
<div class="card-title">Relational Model</div>
<p class="card-desc">Relations, keys, constraints, and relational algebra — with a live JOIN visualizer.</p>
<div class="card-meta">
<span class="card-tag">JOIN Visualizer</span>
<span class="card-tag">Keys</span>
</div>
</a>
<a href="topics/03-sql.html" class="course-card" style="--card-color:#10B981">
<div class="card-num">03 — Beginner · 35 min</div>
<div class="card-title">SQL Fundamentals</div>
<p class="card-desc">SELECT, JOINs, subqueries, window functions, EXPLAIN plans — with a live query visualizer.</p>
<div class="card-meta">
<span class="card-tag">Query Visualizer</span>
<span class="card-tag">EXPLAIN</span>
</div>
</a>
<a href="topics/04-normalization.html" class="course-card" style="--card-color:#F59E0B">
<div class="card-num">04 — Intermediate · 30 min</div>
<div class="card-title">Normalization</div>
<p class="card-desc">1NF through BCNF — animated step-by-step table decomposition to remove redundancy.</p>
<div class="card-meta">
<span class="card-tag">Animated Decomposition</span>
<span class="card-tag">FD</span>
</div>
</a>
<a href="topics/05-transactions.html" class="course-card" style="--card-color:#EF4444">
<div class="card-num">05 — Intermediate · 40 min</div>
<div class="card-title">Transactions & ACID</div>
<p class="card-desc">ACID properties, isolation levels, anomalies — with an interactive isolation timeline.</p>
<div class="card-meta">
<span class="card-tag">MVCC Simulator</span>
<span class="card-tag">Isolation Levels</span>
</div>
</a>
<a href="topics/06-indexing.html" class="course-card" style="--card-color:#06B6D4">
<div class="card-num">06 — Intermediate · 35 min</div>
<div class="card-title">Indexing</div>
<p class="card-desc">B+tree traversal, covering indexes, composite keys — watch the search path animate.</p>
<div class="card-meta">
<span class="card-tag">B+Tree Traversal</span>
<span class="card-tag">Range Scan</span>
</div>
</a>
<a href="topics/07-query-processing.html" class="course-card" style="--card-color:#3B82F6">
<div class="card-num">07 — Advanced · 35 min</div>
<div class="card-title">Query Processing</div>
<p class="card-desc">Parsing, planning, optimization, execution — animated query plan trees.</p>
<div class="card-meta">
<span class="card-tag">Plan Tree</span>
<span class="card-tag">Cost Model</span>
</div>
</a>
<a href="topics/08-concurrency.html" class="course-card" style="--card-color:#EC4899">
<div class="card-num">08 — Advanced · 40 min</div>
<div class="card-title">Concurrency Control</div>
<p class="card-desc">2PL, MVCC, deadlock detection and resolution — with a live lock table.</p>
<div class="card-meta">
<span class="card-tag">2PL Demo</span>
<span class="card-tag">Deadlock Graph</span>
</div>
</a>
<a href="topics/09-storage-engines.html" class="course-card" style="--card-color:#F97316">
<div class="card-num">09 — Advanced · 40 min</div>
<div class="card-title">Storage Engines</div>
<p class="card-desc">InnoDB internals, WAL, LSM trees, buffer pool — with page visualization.</p>
<div class="card-meta">
<span class="card-tag">Page Simulator</span>
<span class="card-tag">WAL / LSM</span>
</div>
</a>
<a href="topics/10-nosql.html" class="course-card" style="--card-color:#84CC16">
<div class="card-num">10 — Intermediate · 35 min</div>
<div class="card-title">NoSQL Databases</div>
<p class="card-desc">Document, column, KV, and graph stores — CAP theorem with a visual comparison.</p>
<div class="card-meta">
<span class="card-tag">NoSQL Comparison</span>
<span class="card-tag">CAP Theorem</span>
</div>
</a>
<a href="topics/11-distributed-databases.html" class="course-card" style="--card-color:#A855F7">
<div class="card-num">11 — Advanced · 45 min</div>
<div class="card-title">Distributed Databases</div>
<p class="card-desc">Raft consensus, sharding, 2PC, replication — with animated leader election.</p>
<div class="card-meta">
<span class="card-tag">Raft Simulation</span>
<span class="card-tag">Sharding</span>
</div>
</a>
<a href="topics/12-interview-guide.html" class="course-card" style="--card-color:#14B8A6">
<div class="card-num">12 — All Levels · 50 min</div>
<div class="card-title">Interview Guide</div>
<p class="card-desc">Schema design patterns, system design Q&A, and a drag-and-drop schema builder.</p>
<div class="card-meta">
<span class="card-tag">Schema Designer</span>
<span class="card-tag">Design Patterns</span>
</div>
</a>
</div>
</section>
<!-- ── Why Visual ──────────────────────────────────────────── -->
<section class="curriculum-section" style="padding-top:0">
<div class="curriculum-label">Why This Course</div>
<h2 class="curriculum-title">Built differently.</h2>
<div class="course-grid" style="grid-template-columns:repeat(auto-fill,minmax(240px,1fr))">
<div class="course-card" style="--card-color:#7C3AED">
<div class="card-title">Live Canvas Demos</div>
<p class="card-desc">Every topic has an interactive canvas demo — B-trees you can search, Raft elections you can trigger, deadlocks you can create.</p>
</div>
<div class="course-card" style="--card-color:#7C3AED">
<div class="card-title">Original Writing</div>
<p class="card-desc">Every explanation written from scratch with analogies that stick. No copy-paste from Wikipedia or textbooks.</p>
</div>
<div class="course-card" style="--card-color:#7C3AED">
<div class="card-title">Trade-offs, Not Dogma</div>
<p class="card-desc">No right answers — only trade-offs. We name them explicitly every time a design choice has a cost.</p>
</div>
<div class="course-card" style="--card-color:#7C3AED">
<div class="card-title">Works Offline</div>
<p class="card-desc">Vanilla HTML, CSS, and Canvas 2D. No npm, no build step, no frameworks. Save it, fork it, read it on a plane.</p>
</div>
</div>
</section>
<!-- ── Footer ──────────────────────────────────────────────── -->
<footer class="site-footer">
<div class="footer-brand">DBMS Illustrated</div>
<p class="footer-sub">A free, animated, original course on database management systems. 12 topics. Zero dependencies.</p>
<div class="footer-links">
<a href="topics/01-intro.html">Start Here</a>
<a href="topics/06-indexing.html">Indexing</a>
<a href="topics/05-transactions.html">Transactions</a>
<a href="topics/11-distributed-databases.html">Distributed DBs</a>
<a href="topics/12-interview-guide.html">Interview Guide</a>
<a href="https://github.com/sridhar-3009/DBMS-Course" target="_blank">GitHub</a>
</div>
<p style="margin-top:1.4rem;font-size:0.8rem;color:var(--text-muted)">
Built with vanilla HTML, CSS, and JavaScript — no frameworks.
Run locally: <code>python3 -m http.server 8080</code>
</p>
</footer>
<script src="https://unpkg.com/three@0.160.0/build/three.min.js"></script>
<script src="js/main.js"></script>
</body>
</html>