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Backup (database)

Database backup ka matlab hai ek database ke data, schema, aur configuration ki copy banana taake…

Overview
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Backup (database) — Quick Facts

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Property: Detail

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Full Name: Database Backup (Data Backup for…

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Category: Database Administration, Data…

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Core Purpose: Database data + schema + config ka…

Topic 1
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Infobox

📊 | Property | Detail | |---|---| | Full Name | Database Backup (Data Backup for Database…
Topic 2
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Kyun Database Backup Alag Hai

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Transactions in-flight hain — kuch…

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Write-ahead log (WAL) me changes…

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Buffer pool (memory) me dirty…

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Indexes continuously update ho…

Topic 3
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Types of Database Backup

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Database ki actual data files…

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Fast backup + fast restore (direct…

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Database-version dependent (same…

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Tools: pg_basebackup, XtraBackup,…

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Backup Types Comparison

📈 | Feature | Physical Full | Physical Incremental | Logical (pg_dump) | WAL/Log Archive |…
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📥 ⚙️ 🔬 💡

Database Backup Process Diagram

🔍 `mermaid flowchart TD A["Backup Schedule Trigger"] --> B{"Backup Type?"} B -- Physical…
Topic 6
📥 📥 🧠 🔬 💡 🎯

Point-in-Time Recovery (PITR)

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Sunday raat 2 AM: Full base backup…

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Monday se Friday: WAL logs har…

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Wednesday 3:15 PM: Developer ne…

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PITR restore: Sunday ka base…

Topic 7
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RDBMS Backup Tools

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pg_dump — Logical backup. Single…

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pg_dumpall — All databases + roles…

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pg_basebackup — Physical backup.…

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WAL Archiving — archive_command ya…

Topic 8
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NoSQL Database Backup

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mongodump / mongorestore — Logical…

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Filesystem Snapshot — WiredTiger…

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MongoDB Atlas Backup — Managed…

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RDB Snapshot — Point-in-time…

Topic 9
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Cloud Managed Database Backup

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Automated Backups — Daily full…

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Manual Snapshots — User-triggered.…

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Aurora — Continuous backup to S3.…

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Automated Backup — Full weekly,…

Topic 10
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Online vs Offline Backup

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Read/write operations continue —…

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WAL/log-based consistency ensure…

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Tools: pg_basebackup, XtraBackup,…

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Slight performance impact ho sakta…

Topic 11
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Backup Strategies

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Sunday: Full physical backup

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Mon-Sat: Incremental backup…

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Continuous: WAL/transaction log…

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PITR: Any point within retention…

Topic 12
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Anti-Patterns

📈 1. File Copy of Running Database Database running hai aur tum cp, tar, ya rsync se data…
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📥 📥 🧠 🔬 💡 🎯

Real-World Use Cases

🔍 SaaS Application (Multi-Tenant PostgreSQL) Multi-tenant SaaS application with PostgreSQL.…
Topic 14
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Common Mistakes

📉 1. Running database ki files directly copy karna (file-level copy) — Sabse common aur…
Topic 15
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Best Practices

🧮 1. Use Database-Native Backup Tools — General file copy nahi, database-specific tools use…
Topic 16
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Interview Perspective

🌐 Common Questions aur Answers Q1: Database backup kya hai aur yeh file backup se kaise…
Topic 17
📥 📥 🧠 🔬 💡 🎯

Glossary

📊 | Term | Definition | |---|---| | Database Backup | Database ka consistent recoverable…
Comparison
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Backup Types Comparison

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Scope: Entire DB files

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Consistency: Crash-consistent + WAL

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Speed (Backup): Slow (large)

Diagram
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Visual Flow

📊 Diagram visualization — details in narration
Related Topics

See Also

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Backup

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Disaster Recovery

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Replication

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ACID

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Database

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Data Integrity

Quick Quiz
🧠 QUIZ TIME

Quiz — Question 1

Backup (database) ka sabse sahi definition kya hai?

Quick Quiz
🧠 QUIZ TIME

Quiz — Question 2

Backup (database) ka 'Full Name' kya hai?

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Backup (database) Complete!

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