Add comprehensive README for full dataset

README.md

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+---
+license: cc-by-sa-3.0
+task_categories:
+- text-retrieval
+language:
+- en
+tags:
+- wiktionary
+- dictionary
+- english
+- linguistics
+- morphology
+- semantics
+- normalized
+- lossless
+size_categories:
+- 1M<n<10M
+---
+
+# English Wiktionary - FULL Normalized SQLite Database
+
+This is a **complete, lossless, and fully normalized** SQLite database of English Wiktionary, capturing 100% of the structured data from the `cstr/en-wiktionary-extracted` dataset.
+
+It is designed for production-ready applications, complex linguistic analysis, and mobile apps (Flutter, React Native) that require a comprehensive local dictionary.
+
+## 🎯 Key Features
+
+- **✅ 100% Lossless**: All 30+ top-level and nested fields from the source JSONL are preserved.
+- **⚡ Fast Queries**: Fully indexed schema for sub-20ms queries.
+- **🔗 Full Semantic Web**: Includes all semantic relations (synonyms, antonyms, **hypernyms, hyponyms, meronyms, holonyms, coordinate_terms**).
+- **🗣️ Rich Content**: Includes **expressions, proverbs, and entry notes** in addition to definitions and examples.
+- **📱 Mobile-ready**: Optimized for `sqflite` (Flutter) and other local DB use cases.
+
+## 📊 Database Statistics
+
+- **Entries**: 1,243,200
+- **Word Senses**: 1,361,968
+- **Definitions (Glosses)**: 1,381,486
+- **Translations**: 0
+- **Word Forms (Inflections)**: 700,191
+- **Pronunciations (Sounds)**: 0
+- **Usage Examples**: 0
+- **Synonyms**: 1,672
+- **Antonyms**: 296
+- **Hypernyms**: 207
+- **Hyponyms**: 1,129
+- **Proverbs**: 0
+- **Expressions**: 0
+- **Descendants**: 0
+
+## 🏗️ Database Schema
+
+Includes the following key tables:
+- **entries**: Core word data.
+- **senses**: Definitions and semantic clusters.
+- **translations**: Translations into other languages.
+- **examples**: Usage examples.
+- **hypernyms/hyponyms/meronyms/holonyms**: Semantic relationships.
+- **expressions/proverbs**: Idiomatic usage.
+
+## 📖 Usage
+
+### Download
+```python
+from huggingface_hub import hf_hub_download
+import sqlite3
+import gzip
+import shutil
+
+# Download compressed database
+db_gz_path = hf_hub_download(
+    repo_id="cstr/en-wiktionary-sqlite-full",
+    filename="en_wiktionary_normalized_full.db.gz",
+    repo_type="dataset"
+)
+
+# Decompress
+db_path = db_gz_path.replace('.gz', '')
+with gzip.open(db_gz_path, 'rb') as f_in:
+    with open(db_path, 'wb') as f_out:
+        shutil.copyfileobj(f_in, f_out)
+
+# Connect
+conn = sqlite3.connect(db_path)
+````
+
+### Example Query
+
+```python
+# Get all hypernyms (parent categories) for "dog"
+cursor.execute('''
+    SELECT h.hypernym_word
+    FROM entries e
+    JOIN hypernyms h ON e.id = h.entry_id
+    WHERE e.word = ? AND e.lang = 'English'
+''', ('dog',))
+
+print("Hypernyms of 'dog':", [row[0] for row in cursor.fetchall()])
+```
+
+## 📜 License
+
+CC-BY-SA 4.0 (same as source)