Welcome to Westonci.ca, the ultimate question and answer platform. Get expert answers to your questions quickly and accurately. Join our platform to connect with experts ready to provide detailed answers to your questions in various areas. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

Which guarantee(s) does Spanner NOT provide?

(A) If o ers a multi-version, temporal database where data is versioned and each version is timestamped with its commit time.
(B) It provides concurrency control using a lock table that keeps state for two-phase locking
(C) It o ers external consistency via its TrueTime API
(D) It supports nonatomic schema changes.