if the log is as efficient and scalable why is MVCC even a thing? TBH the description on wikipedia looks identical to Datomic to me, minus the persistent data s

if the log is as efficient and scalable why is MVCC even a thing? TBH the description on wikipedia looks identical to Datomic to me, minus the persistent data structures. Does it just come down to rectangular fixed width structs of RDBMS give better query performance? https://en.m.wikipedia.org/wiki/Multiversion_concurrency_control https://en.m.wikipedia.org/wiki/Multiversion_concurrency_con...