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storage_geo_schema
GitHub Actions edited this page Jan 2, 2026
·
1 revision
Stand: 5. Dezember 2025
Version: 1.0.0
Kategorie: Storage
Dieses Dokument definiert ein abfragefreundliches relationales Schema für Punkt-, Linien- und Polygon-Daten inklusive Indexierung und Beispielabfragen. Es dient als Zielbild für die Ablage nach dem Ingestion-Prozess.
- Saubere Trennung von Geometrietypen (Point/LineString/Polygon)
- Schnelle räumliche Abfragen (R-Tree/GiST) und begriffliche Filter (B-Tree/FTS/Trigram)
- Kompatibel mit EPSG:4326 (lon/lat); Bounding-Box pro Feature
- Unterstützt Suchszenarien wie: "LSG", "Fließgewässer", nahe (lon, lat)
-
feature_id(PK, UUID/ULID) -
source_id(TEXT) -
source_pk(TEXT) -
class(TEXT) — z. B. "LSG", "Fließgewässer" -
name(TEXT) -
bbox_min_lon(DOUBLE) -
bbox_min_lat(DOUBLE) -
bbox_max_lon(DOUBLE) -
bbox_max_lat(DOUBLE) -
tags(JSON) -
created_at(TIMESTAMP)
-
feature_id(FK → features) -
lon(DOUBLE) -
lat(DOUBLE)
-
feature_id(FK → features) -
geom_wkt(TEXT) — WKT LineString; optional: normalisierte Stützpunkte in separater Tabelle
-
feature_id(FK → features) -
geom_wkt(TEXT) — WKT Polygon (Außenring + Innenringe)
-
feature_id(FK → features) -
term(TEXT) -
lang(TEXT, optional)
-
term(TEXT) -
canonical(TEXT) -
lang(TEXT)
Hinweis: In PostGIS-Umgebungen können geom_wkt-Spalten als geometry-Typ modelliert werden (GiST-Index). In einfacheren Setups bleiben WKT + BBox; räumliche Filter laufen über BBox-First-Filter + optionale Software-Präzisierung.
-- Basis (ohne PostGIS)
CREATE TABLE features (
feature_id TEXT PRIMARY KEY,
source_id TEXT NOT NULL,
source_pk TEXT NOT NULL,
class TEXT,
name TEXT,
bbox_min_lon DOUBLE PRECISION,
bbox_min_lat DOUBLE PRECISION,
bbox_max_lon DOUBLE PRECISION,
bbox_max_lat DOUBLE PRECISION,
tags JSONB,
created_at TIMESTAMP DEFAULT now()
);
CREATE INDEX ix_features_class ON features(class);
CREATE INDEX ix_features_name ON features(name);
CREATE INDEX ix_features_bbox ON features(bbox_min_lon, bbox_min_lat, bbox_max_lon, bbox_max_lat);
CREATE TABLE points (
feature_id TEXT REFERENCES features(feature_id) ON DELETE CASCADE,
lon DOUBLE PRECISION NOT NULL,
lat DOUBLE PRECISION NOT NULL
);
CREATE INDEX ix_points_lonlat ON points(lon, lat);
CREATE TABLE lines (
feature_id TEXT REFERENCES features(feature_id) ON DELETE CASCADE,
geom_wkt TEXT NOT NULL
);
CREATE TABLE polygons (
feature_id TEXT REFERENCES features(feature_id) ON DELETE CASCADE,
geom_wkt TEXT NOT NULL
);
CREATE TABLE terms (
feature_id TEXT REFERENCES features(feature_id) ON DELETE CASCADE,
term TEXT NOT NULL,
lang TEXT
);
CREATE INDEX ix_terms_term ON terms(term);
CREATE TABLE synonyms (
term TEXT,
canonical TEXT,
lang TEXT
);
CREATE INDEX ix_synonyms_term ON synonyms(term);
-- Optional: FTS/Trigram (PostgreSQL-abhängig)
-- CREATE EXTENSION pg_trgm;
-- CREATE INDEX ix_features_name_trgm ON features USING gin (name gin_trgm_ops);-- Variante mit PostGIS
-- CREATE EXTENSION postgis;
CREATE TABLE features (
feature_id TEXT PRIMARY KEY,
source_id TEXT NOT NULL,
source_pk TEXT NOT NULL,
class TEXT,
name TEXT,
bbox_min_lon DOUBLE PRECISION,
bbox_min_lat DOUBLE PRECISION,
bbox_max_lon DOUBLE PRECISION,
bbox_max_lat DOUBLE PRECISION,
tags JSONB,
created_at TIMESTAMP DEFAULT now()
);
CREATE TABLE lines (
feature_id TEXT REFERENCES features(feature_id) ON DELETE CASCADE,
geom geometry(LineString, 4326) NOT NULL
);
CREATE INDEX ix_lines_geom_gist ON lines USING gist (geom);
CREATE TABLE polygons (
feature_id TEXT REFERENCES features(feature_id) ON DELETE CASCADE,
geom geometry(Polygon, 4326) NOT NULL
);
CREATE INDEX ix_polygons_geom_gist ON polygons USING gist (geom);
CREATE TABLE points (
feature_id TEXT REFERENCES features(feature_id) ON DELETE CASCADE,
geom geometry(Point, 4326) NOT NULL
);
CREATE INDEX ix_points_geom_gist ON points USING gist (geom);- Neutral (BBox-First, grob):
SELECT f.*
FROM features f
WHERE f.class = 'LSG'
AND 45 BETWEEN f.bbox_min_lon AND f.bbox_max_lon
AND 16 BETWEEN f.bbox_min_lat AND f.bbox_max_lat;- PostGIS (präzise):
SELECT f.*
FROM features f
JOIN polygons p ON p.feature_id = f.feature_id
WHERE f.class = 'LSG'
AND ST_Contains(p.geom, ST_SetSRID(ST_MakePoint(45, 16), 4326));SELECT f.*
FROM features f
JOIN lines l ON l.feature_id = f.feature_id
WHERE f.class = 'Fließgewässer'
AND ST_DWithin(l.geom, ST_SetSRID(ST_MakePoint(45,16), 4326), 1000); -- 1000m-- Synonymauflösung (einfach)
SELECT f.*
FROM features f
JOIN terms t ON t.feature_id = f.feature_id
LEFT JOIN synonyms s ON s.term = t.term
WHERE (t.term = 'LSG' OR s.canonical = 'LSG');-
class,name,tagsausmappingsübernehmen -
bbox_*aus normalisierter Geometrie berechnen - Punkt-/Linie-/Polygon nach Typ in jeweilige Tabelle schreiben (1:n möglich)
- Begriffe (terms) befüllen:
name,class, extrahierte Schlagworte - Synonyme als Lookup (z. B. aus
geo_classes_v1)
- BBox-Index beschleunigt Grobfilterung vor genauer Geometrieprüfung
- B-Tree auf
class,name; optional FTS/Trigram für unscharfe Suchbegriffe - GiST/SpGist für Geometriespalten (PostGIS)
-
source_id+source_pkfür Idempotenz/Lineage -
feature_idals stabile interne ID (UUID/ULID) - Validierung: Geometrie-Validität, CRS=EPSG:4326, BBox vorhanden
- Optional: MultiGeometrien (MultiPoint/MultiLineString/MultiPolygon)
- Optional: Generalisierung (Levels of Detail) für schnelle Kartenansichten
- Optional: Historisierung/Versionierung (Valid-From/To)
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