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id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
id title category status verification_status canonical_id aliases duplicate_of source_trust_level confidence_score created_at updated_at review_reason merge_history tags raw_sources applied_in github_commit
sql-backup-db SQL Backup DB Database draft conceptual
SQL BACKUP DATABASE Statement
BACKUP DATABASE
differential backup
B 0.87 2026-07-04 2026-07-04
sql
database
w3schools
backup
sqlserver
https://www.w3schools.com/sql/sql_backup_db.asp

SQL Backup DB

🎯 한 줄 통찰 (One-line insight)

BACKUP DATABASE (SQL Server) creates a full backup to disk, and WITH DIFFERENTIAL creates a faster, smaller backup capturing only changes since the last full backup. [S1]

🧠 핵심 개념 (Core concepts)

  • BACKUP DATABASE statement — creates a full backup of an existing SQL Server database. [S1]
  • SyntaxBACKUP DATABASE databasename TO DISK = 'filepath';. [S1]
  • BACKUP WITH DIFFERENTIAL — captures only data changed since the last full backup; requires at least one prior full backup. [S1]
  • Syntax (differential)BACKUP DATABASE databasename TO DISK = 'filepath' WITH DIFFERENTIAL;. [S1]

🧩 추출된 패턴 (Extracted patterns)

  • Store backups on a different drive — placing the backup on a separate drive from the original database protects against losing both to the same disk failure. [S1]
  • Full-then-differential strategy — a differential backup reduces backup time by only capturing changes, but depends on a prior full backup existing. [S1]

📖 세부 내용 (Details)

  • Full backup: BACKUP DATABASE testDB TO DISK = 'D:\backups\testDB.bak';. [S1]
  • Differential backup: BACKUP DATABASE testDB TO DISK = 'D:\backups\testDB.bak' WITH DIFFERENTIAL;. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — DROP DATABASE 같은 되돌릴 수 없는 작업 전에 선행되어야 하는 안전장치다. [S1]

💻 코드 패턴 (Code patterns)

Full and differential backup (SQL Server):

BACKUP DATABASE testDB
TO DISK = 'D:\backups\testDB.bak';

BACKUP DATABASE testDB
TO DISK = 'D:\backups\testDB.bak'
WITH DIFFERENTIAL;

검증 상태 및 신뢰도

  • 상태: draft
  • 검증 단계: conceptual
  • 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
  • 신뢰 점수: 0.87
  • 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

  • 상위/루트: SQL Tutorial
  • 관련 개념: SQL Create DB, SQL Drop DB
  • 참조 맥락: 데이터베이스 삭제/변경 등 위험한 작업 이전에 항상 선행되어야 할 안전장치.

📚 출처 (Sources)

📝 변경 이력 (Change history)

  • 2026-07-04: Initial draft synthesized from the W3Schools "SQL BACKUP DATABASE Statement" page (Astra wiki-curation, P-Reinforce v3.1 format).