The document discusses various database systems and their consistency models. It lists several column-oriented, document-oriented, key-value, and relational databases. For each type of database, it notes the consistency guarantees provided in parentheses below the database names.

1. CAP

2. ( Consistency)

3. ( Consistency)

4. ( Consistency)

5. DB
( Consistency)

6. DB DB
( Consistency)

7. DB DB
( Consistency)

8. DB DB
( Consistency)
0.5 * p * (1 - p) + 0.5 * p * (1 -p) + 1 * p * p = p

9. DB DB
( Consistency)
(Tolerance of network Partition)
BigTable (column-oriented/tabular)
Hypertable (column-oriented/tabular)
HBase (column-oriented/tabular)
MongoDB (document-oriented)
Terrastore (document-oriented)
Redis (key-value)
Scalaris (key-value)
MemcacheDB (key-value)
Berkeley DB (key-value)

10. DB DB
( Consistency)
Traditional RDBMSs like Postgres, MySQL, etc (relational)
Vertica (column-oriented)
Aster Data (relational)
Greenplum (relational)

11. DB DB
( Consistency)
Dynamo (key-value)
Voldemort (key-value)
Tokyo Cabinet (key-value)
KAI (key-value)
Cassandra (column-oriented/tabular)
CouchDB (document-oriented)
SimpleDB (document-oriented)
Riak (document-oriented)

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13. dl1 dl2

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