Skill Topic · Cinematic

📘 AWS — DynamoDB (NoSQL Database)

Fully managed NoSQL — single-digit millisecond response, any scale! ⚡

Overview

📘 AWS — DynamoDB (NoSQL Database) — Quick Facts

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Feature: RDS (SQL)

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Data Model: Tables with fixed columns

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Relationships: ✅ JOINs, Foreign Keys

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Transactions: ✅ Full ACID

Topic 1

🎯 Real Life Analogy — Kirana Store Ka Super-Fast Khata (Ledger)

📊 📒 DynamoDB = Kirana Store Ka Digital Khata — Chaand Takk Bhi Scale Kare! Sochlo tumhare…

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📌 1. DynamoDB Kya Hai?

💾 ⚡ Simple Explanation: DynamoDB = AWS ki fully managed NoSQL database — koi server manage…

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📌 2. Core Concepts — Samjho Pehle!

🗄️ 📒 DynamoDB ki duniya — Khata analogy ke saath `mermaid graph TD A["📒 TABLE<br/>= Khata…

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📌 3. Primary Key Types — 2 Tarah Ke

📈 🔑 Samjho — yeh DynamoDB ki foundation hai! Type 1: Partition Key Only (Simple) | UserID…

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📌 4. Table Create Karna

🔍 `bash ═══ Simple Table (Partition Key only) ═══ aws dynamodb create-table \ --table-name…

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📌 5. CRUD Operations — Data Daal / Nikal / Update / Delete

📉 📝 DynamoDB me data operations CLI se: `bash ═══ PUT ITEM (Create ya Replace) ═══ aws…

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📌 6. Query vs Scan — BAHUT IMPORTANT!

🧮 ⚠️ Yeh samajhna CRITICAL hai — galat use se bill bahut aayega! `mermaid graph LR A["🔍…

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📌 7. Secondary Indexes — Alternative Search

🌐 📇 Analogy: Phone book me naam se search = Primary Key Lekin phone number se search karna…

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📌 8. Capacity Modes — Pay Kaise Karoge?

📊 💰 2 payment models — samjho aur sahi chuno! | Feature | On-Demand | Provisioned |…

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📌 9. DynamoDB Streams — Change Notifications

💾 📡 Analogy: Khata me jab bhi koi entry likhi jaaye — bell baje! Streams = har…

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📌 10. Global Tables — Multi-Region

🗄️ 🌍 Analogy: Same khata har shehar ki branch me — real-time sync! Global Tables = ek table…

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📌 11. TTL (Time to Live) — Auto-Delete

📈 ⏰ Analogy: Milk ki expiry date — date guzar gayi to auto-delete! TTL = ek timestamp…

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📌 12. DAX (DynamoDB Accelerator) — In-Memory Cache

🔍 🚀 Analogy: Baar baar poochhe jaane wale phone numbers yaad kar lo! DAX = DynamoDB ke liye…

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📌 13. DynamoDB with Python (boto3)

📉 `python import boto3 from boto3.dynamodb.conditions import Key ═══ DynamoDB Resource ═══…

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📌 14. Free Tier — HAMESHA Free!

🧮 🆓 DynamoDB ka free tier EXPIRE nahi hota — ALWAYS FREE! | Feature | Free Limit | Duration…

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📌 15. Common Mistakes & Solutions

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📌 16. Practice Exercises

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{UserID: "U001", Name: "Anil",…

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{UserID: "U002", Name: "Rahul",…

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{UserID: "U003", Name: "Priya",…

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Partition Key: CustomerID (String)

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✅ Summary

💾 ⚡ DynamoDB = Kirana Store Ka Super-Fast Digital Khata — Any Scale! | Concept | Analogy |…

Comparison

📌 6. Query vs Scan — BAHUT IMPORTANT!

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Kya karta: Primary Key se specific items

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Speed: ⚡ FAST (O(1) — seedha partition!)

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Cost: 💚 Low (sirf matching items ka RCU)

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quick Quiz

Quiz — Question 1

📘 AWS — DynamoDB (NoSQL Database) ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 AWS — DynamoDB (NoSQL Database) ka 'Data Model' kya hai?

Complete! 🎉

📘 AWS — DynamoDB (NoSQL Database) Complete!

Aliens School · HIEN · Cinematic Knowledge

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