36 lines
1.8 KiB
MySQL
36 lines
1.8 KiB
MySQL
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-- Migration 026: Hierarchische Kontext-Zuordnung Reifegradmodell → Fokus / Stilrichtung / Trainingsstil
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-- Vererbung: Modell auf Fokus-Ebene gilt als Basis; spezifischere Zeilen überschreiben Zelltexte
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-- für dieselbe Fähigkeit (skill_id) beim Zusammenführen (resolve).
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-- Datum: 2026-04-27
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CREATE TABLE IF NOT EXISTS maturity_model_context_bindings (
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id SERIAL PRIMARY KEY,
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maturity_model_id INT NOT NULL REFERENCES maturity_models(id) ON DELETE CASCADE,
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focus_area_id INT NOT NULL REFERENCES focus_areas(id) ON DELETE CASCADE,
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style_direction_id INT REFERENCES style_directions(id) ON DELETE CASCADE,
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training_type_id INT REFERENCES training_types(id) ON DELETE CASCADE,
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created_at TIMESTAMP DEFAULT NOW(),
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updated_at TIMESTAMP DEFAULT NOW(),
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CONSTRAINT chk_mcb_tier CHECK (
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(style_direction_id IS NULL AND training_type_id IS NULL)
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OR (style_direction_id IS NOT NULL AND training_type_id IS NULL)
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OR (style_direction_id IS NOT NULL AND training_type_id IS NOT NULL)
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)
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);
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CREATE INDEX IF NOT EXISTS idx_mmcb_model ON maturity_model_context_bindings(maturity_model_id);
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CREATE INDEX IF NOT EXISTS idx_mmcb_focus ON maturity_model_context_bindings(focus_area_id);
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-- Pro Ebene höchstens eine Zuordnung je Kontext
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CREATE UNIQUE INDEX IF NOT EXISTS uq_mmcb_focus_only
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ON maturity_model_context_bindings (focus_area_id)
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WHERE style_direction_id IS NULL AND training_type_id IS NULL;
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CREATE UNIQUE INDEX IF NOT EXISTS uq_mmcb_focus_style
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ON maturity_model_context_bindings (focus_area_id, style_direction_id)
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WHERE style_direction_id IS NOT NULL AND training_type_id IS NULL;
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CREATE UNIQUE INDEX IF NOT EXISTS uq_mmcb_focus_style_ttype
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ON maturity_model_context_bindings (focus_area_id, style_direction_id, training_type_id)
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WHERE training_type_id IS NOT NULL;
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