docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합

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  Subsystems, 77개)는 이미 Topic_Programming/Topic_Programming에 더 최신 버전이
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  JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동.
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- Topic_Programming 최종 문서 수: 2784 → 3985.

10_Wiki/Topic_Programming/Topic_Python/Python_MongoDB_Delete.md

@@ -0,0 +1,70 @@
+---
+id: python-mongodb-delete
+title: "Python MongoDB Delete"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["delete_one()", "delete_many()", "파이썬 MongoDB 삭제"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.9
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["python", "mongodb", "w3schools", "delete"]
+raw_sources: ["https://www.w3schools.com/python/python_mongodb_delete.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[Python MongoDB Delete]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`delete_many({})` with an EMPTY query object deletes every document in the collection — the empty-filter-means-everything convention is the same footgun as SQL's missing-WHERE-clause deletes everything. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`delete_one(query)`** — deletes the FIRST document matching the query, even if multiple match. [S1]
+- **`delete_many(query)`** — deletes ALL documents matching the query. [S1]
+- **`delete_many({})`** — empty query object deletes ALL documents in the collection. [S1]
+- **`DeleteResult.deleted_count`** — the number of documents actually deleted. [S1]
+
+## 🧩 추출된 패턴 (Extracted patterns)
+- **Empty filter = delete everything** — matches the same risk pattern as omitting WHERE in SQL DELETE; MongoDB's version of the danger is passing `{}` to `delete_many()`. [S1]
+
+## 📖 세부 내용 (Details)
+- Delete one (first match only): `myquery = {"address": "Mountain 21"}; mycol.delete_one(myquery)`. [S1]
+- Delete many by regex: `myquery = {"address": {"$regex": "^S"}}; x = mycol.delete_many(myquery); print(x.deleted_count, "documents deleted.")`. [S1]
+- Delete all in collection: `x = mycol.delete_many({}); print(x.deleted_count, "documents deleted.")`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — SQL Delete의 "WHERE 누락 = 전체 삭제" 위험이 MongoDB에서는 "빈 쿼리 객체 = 전체 삭제"로 그대로 재현된다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Delete all documents in a collection (Python):
+```python
+x = mycol.delete_many({})
+print(x.deleted_count, " documents deleted.")
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.90
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[Python Tutorial]]
+- **관련 개념:** [[Python MongoDB Query]], [[SQL Delete]], [[Python MongoDB Drop Collection]]
+- **참조 맥락:** SQL Delete의 WHERE 누락 위험이 MongoDB의 빈 쿼리 객체로 재현된다.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — Python MongoDB Delete Document — https://www.w3schools.com/python/python_mongodb_delete.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "Python MongoDB Delete Document" page (Astra wiki-curation, P-Reinforce v3.1 format).