README.md

---
license: cc-by-sa-3.0
task_categories:
- text-retrieval
language:
- de
tags:
- wiktionary
- dictionary
- german
- linguistics
- morphology
- semantics
- normalized
- lossless
size_categories:
- 1M<n<10M
---

# German Wiktionary - Normalized SQLite Database with semantic web data etc

This is a lossless, fully normalized SQLite database of German Wiktionary, capturing every field from the `cstr/de-wiktionary-extracted` dataset.

## 🎯 Key Features

- **✅ 100% Lossless**: ALL fields captured including:
  - 🔗 **Wikilinks** in definitions (semantic connections)
  - 📝 **Qualifiers** (e.g., "archaic", "Swiss", "informal")
  - 🏷️ **Sense IDs** (unique identifiers)
  - 🌐 **Wikidata IDs** (for semantic web linking)
  - 📚 **Attestations** (historical citations)
  - 🎭 **Head templates** (morphological data like Genus/Plural)
  - 📖 **Info templates** (structured metadata)
- **⚡ Fast Queries**: Fully indexed schema for sub-20ms queries
- **🔗 Complete Semantic Web**: All relations preserved with sense-level granularity
- **📱 Mobile-ready**: Optimized for sqflite (Flutter) and local DB use cases

## 📊 Database Statistics

- **Entries**: 970,801
- **Word Senses**: 3,098,364
- **Definitions (Glosses)**: 3,087,300
- **Wikilinks**: 0
- **Sense IDs**: 3,098,364
- **Qualifiers**: Embedded in senses
- **Translations**: 1,131,251
- **Word Forms**: 6,100,090
- **Head Templates**: 0
- **Pronunciations**: 2,327,762
- **Examples**: 427,322
- **Attestations**: 0
- **Wikidata IDs**: 0
- **Synonyms**: 161,563
- **Antonyms**: 76,054
- **Hypernyms**: 133,059
- **Hyponyms**: 0

## 🏗️ Database Schema (40+ Tables)

### New Tables (vs Previous Versions)
- **head_templates**: Morphological templates (Crucial for German inflection/gender)
- **entry_wikipedia**: Wikipedia cross-references
- **sense_links**: Wikilinks in definitions
- **sense_raw_tags**: Unstructured tags
- **sense_wikidata**: Wikidata identifiers
- **sense_wikipedia**: Wikipedia at sense level
- **attestations**: Historical citations
- **info_templates**: Structured metadata

### Core Tables
- **entries**: Core word data with etymology
- **senses**: Definitions with qualifier, senseid, head_nr
- **translations**: Multi-language translations
- **examples**: Usage examples
- **semantic relations**: hypernyms/hyponyms/meronyms/holonyms/coordinate_terms

## 📖 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/de-wiktionary-semantic",
    filename="de_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 Queries

```python
# Get definition with wikilinks for "Hund"
cursor.execute('''
    SELECT g.gloss_text, GROUP_CONCAT(l.link_text, ', ') as links
    FROM entries e
    JOIN senses s ON e.id = s.entry_id
    JOIN glosses g ON s.id = g.sense_id
    LEFT JOIN sense_links l ON s.id = l.sense_id
    WHERE e.word = ? AND e.lang = 'Deutsch'
    GROUP BY g.id
''', ('Hund',))

# Find Wikidata ID for a sense
cursor.execute('''
    SELECT e.word, w.wikidata_id
    FROM entries e
    JOIN senses s ON e.id = s.entry_id
    JOIN sense_wikidata w ON s.id = w.sense_id
    WHERE e.word = ?
''', ('Katze',))
```

## 📜 License

CC-BY-SA 4.0 (same as source)