37 lines
1007 B
SQL
37 lines
1007 B
SQL
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-- MemPalace Knowledge Graph Schema
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-- SQLite database at ~/.mempalace/knowledge_graph.db
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CREATE TABLE IF NOT EXISTS entities (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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type TEXT DEFAULT 'unknown',
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properties TEXT DEFAULT '{}'
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);
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CREATE TABLE IF NOT EXISTS triples (
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id TEXT PRIMARY KEY,
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subject TEXT NOT NULL,
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predicate TEXT NOT NULL,
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object TEXT NOT NULL,
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valid_from TEXT,
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valid_to TEXT,
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confidence REAL DEFAULT 1.0,
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source_closet TEXT,
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source_file TEXT
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);
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CREATE TABLE IF NOT EXISTS attributes (
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entity_id TEXT NOT NULL,
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key TEXT NOT NULL,
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value TEXT,
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valid_from TEXT,
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valid_to TEXT,
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PRIMARY KEY (entity_id, key, valid_from)
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);
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-- Indexes
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CREATE INDEX IF NOT EXISTS idx_triples_subject ON triples(subject);
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CREATE INDEX IF NOT EXISTS idx_triples_object ON triples(object);
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CREATE INDEX IF NOT EXISTS idx_triples_predicate ON triples(predicate);
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CREATE INDEX IF NOT EXISTS idx_triples_valid ON triples(valid_from, valid_to);
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