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MySQL Schema Design

MySQL schema design ek database ke tables, columns, data types, relationships, constraints, aur…

Overview

MySQL Schema Design — Quick Facts

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Property: Detail

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Category: Database Architecture / Schema…

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Applies To: MySQL 5.7, 8.0, 8.4+

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Storage Engine: InnoDB (default, recommended)

Topic 1

Quick Info

🎨 | Property | Detail | |---|---| | Category | Database Architecture / Schema Design | |…

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Schema Design Process

✏️ `mermaid flowchart LR subgraph Phase1["Requirements"] Req["Business<br/>Requirements"]…

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Normalization

🖌️ Concept Normalization schema design ka process hai jisme data ko logically organize karte…

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Denormalization

📐 When to Denormalize Normalization data integrity ke liye best hai, lekin kabhi-kabhi…

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Data Types — Choosing Correctly

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Primary Keys

💡 Auto-Increment vs UUID | Feature | AUTO_INCREMENT BIGINT | UUID (BINARY 16) |…

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Foreign Keys & Relationships

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ON DELETE CASCADE — jab child…

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ON DELETE RESTRICT — jab…

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ON DELETE SET NULL — jab child…

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Constraints

✨ Constraint Types | Constraint | Purpose | Example | |---|---|---| | PRIMARY KEY | Unique…

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Naming Conventions

🎨 Recommended Conventions | Element | Convention | Example | |---|---|---| | Table |…

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Multi-Tenant Schema Strategies

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Schema Anti-Patterns

🖌️ | Anti-Pattern | Problem | Better Approach | |---|---|---| | God table | Single table…

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Generated Columns (5.7+)

📐 Calculated values schema level par define karna — MySQL automatically maintain karta hai:…

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Schema Migration

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Template — Production Table Design

💡 `sql -- Standard production table template CREATE TABLE entity_name ( -- Primary Key id…

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Performance-Oriented Design Tips

🌈 Column Order Matters InnoDB me fixed-length columns (INT, BIGINT, DATETIME) ko pehle…

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Interesting Facts

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utf8mb4 MySQL me "true UTF-8" hai…

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MySQL me TIMESTAMP ka range sirf…

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InnoDB me primary key B+Tree ka…

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MySQL 8.0 ka Instant DDL…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

MySQL Schema Design ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

MySQL Schema Design ka 'Category' kya hai?

Complete! 🎉

MySQL Schema Design Complete!

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