Wiki Article · Cinematic

Field (Database)

Field database me ek single data item ya value hoti hai jo kisi record (row) ke andar ek specific…

Overview

Field (Database) — Quick Facts

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Property: Detail

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Full Name: Field (Database)

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Also Known As: Column Value, Attribute, Property,…

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Category: Database, Data Platform, Data…

Topic 1

Infobox

📊 | Property | Detail | |---|---| | Full Name | Field (Database) | | Also Known As | Column…

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Introduction

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Database → contains multiple…

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Table → contains multiple Rows (ya…

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Row → contains multiple Fields (ya…

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"Anil" ek field hai (row 1, column…

Topic 3

Field vs Column vs Attribute

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"The email column is of type…

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"The email field in row 1 is…

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"User entity has an email…

Topic 4

Field Data Types

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Storage waste hota hai…

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Performance degrade hoti hai…

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Data integrity break hoti hai…

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Index efficiency affect hoti hai

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Field Constraints

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Primary Key = mandatory for every…

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NOT NULL = use where business…

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UNIQUE = natural keys (email,…

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FOREIGN KEY = relationships…

Topic 6

Fields in Different Database Paradigms

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id (INT, PK, AUTO_INCREMENT)

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name (VARCHAR(100), NOT NULL)

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email (VARCHAR(255), UNIQUE, NOT…

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age (INT, CHECK >= 0)

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Field Naming Conventions

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Descriptive names: first_name not…

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Consistent casing: snake_case (SQL…

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Singular nouns: user_id not…

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Avoid reserved words: order,…

Topic 8

Database Structure Diagram

🌐 `mermaid graph TD subgraph "Database Hierarchy" A[Database Server] --> B[Database - e.g.…

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Special Field Types

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AUTO_INCREMENT / SERIAL —…

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UUID — random unique identifiers

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TIMESTAMP DEFAULT…

Topic 10

Field Indexing

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Primary Key Index — automatic,…

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Unique Index — UNIQUE constraint…

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Secondary/Non-Unique Index —…

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Composite Index — multiple fields…

Topic 11

Field Design Best Practices

🗄️ Choose Appropriate Types Smallest type choose karo jo requirement satisfy kare — TINYINT…

Topic 12

Common Mistakes

📈 Storing Comma-Separated Values tags = "python,java,go" — yeh first normal form violation…

Comparison

Field vs Column vs Attribute

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Column: Table structure/schema…

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Field: Data instance level

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Attribute: Entity-Relationship (ER)…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

Field (Database) ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

Field (Database) ka 'Full Name' kya hai?

Complete! 🎉

Field (Database) Complete!

Aliens Wiki · HIEN · Cinematic Knowledge

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Field (Database) Complete

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Field (Database)

Field (Database) — Quick Facts

Property: Detail

Full Name: Field (Database)

Also Known As: Column Value, Attribute, Property,…

Category: Database, Data Platform, Data…

Infobox

Introduction

Database → contains multiple…

Table → contains multiple Rows (ya…

Row → contains multiple Fields (ya…

"Anil" ek field hai (row 1, column…

Field vs Column vs Attribute

"The email column is of type…

"The email field in row 1 is…

"User entity has an email…

Field Data Types

Storage waste hota hai…

Performance degrade hoti hai…

Data integrity break hoti hai…

Index efficiency affect hoti hai

Field Constraints

Primary Key = mandatory for every…

NOT NULL = use where business…

UNIQUE = natural keys (email,…

FOREIGN KEY = relationships…

Fields in Different Database Paradigms

id (INT, PK, AUTO_INCREMENT)

name (VARCHAR(100), NOT NULL)

email (VARCHAR(255), UNIQUE, NOT…

age (INT, CHECK >= 0)

Field Naming Conventions

Descriptive names: first_name not…

Consistent casing: snake_case (SQL…

Singular nouns: user_id not…

Avoid reserved words: order,…

Database Structure Diagram

Special Field Types

AUTO_INCREMENT / SERIAL —…

UUID — random unique identifiers

TIMESTAMP DEFAULT…

Field Indexing

Primary Key Index — automatic,…

Unique Index — UNIQUE constraint…

Secondary/Non-Unique Index —…

Composite Index — multiple fields…

Field Design Best Practices

Common Mistakes

Field vs Column vs Attribute

Column: Table structure/schema…

Field: Data instance level

Attribute: Entity-Relationship (ER)…

Visual Flow

See Also

Database

SQL

Relational_database

Primary_key

Foreign_key

Data_type

Quiz — Question 1

Quiz — Question 2

Field (Database) Complete!

Field (Database) Complete

Database