{"id":"ssi-writes-deletes-mutually-exclusive","text":"`write()` discards any pending `delete()` for the same key and vice versa; a key is in `tx._writes` XOR `tx._deletes`, never both simultaneously","truth_value":"IN","source":"entries/2026/05/29/write-skew-detection-ssi_database.md","source_url":"","source_hash":"","justifications":[],"dependents":["ssi-serializability-through-layered-invariants"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"ssi-writes-deletes-mutually-exclusive","truth_value":"IN","reason":"premise"}]}}