Index A | B | C | E | F | G | H | I | K | L | M | O | P | R | S | T | V | W | X A ACID B BASE Branch C Cache CAP theorem Cassandra Clone Column Family Commit Consistency Consistent hash function CouchDB E Eventual Consistency F Fork fork G Git GitLab Graph model Graph partitioning Graph traversal H HBase HEAD Hypertable I Index K Key/value pair L Locking M MapReduce Merge request MongoDB MVCC – Multiversion Concurrency Control O Optimistic concurrency origin P Paxos Pessimistic locking PGM Property graph model Python Enhancement Proposals PEP 0282 PEP 20 PEP 249 PEP 257 PEP 503 PEP 508 PEP 557 PEP 621 PEP 639 PEP 643 PEP 658 PEP 659 PEP 8 R Redis remote Remote repository RFC RFC 4122 RFC 4180 RFC 4506 RFC 7158#9 RFC 7159 RFC 8259 Riak S Semantic integrity T TBD Trunk-Based Development Two-phase locking (2PL) V Vector clock W Working Tree X XPATH XQuery XSLT