| rColl | Database.MongoDB.Query, Database.MongoDB |
| rCursorId | Database.MongoDB.Internal.Protocol |
| rDocuments | Database.MongoDB.Internal.Protocol |
| read | Database.MongoDB.Internal.Connection |
| readExactly | Database.MongoDB.Internal.Connection |
| readHostPort | Database.MongoDB.Connection, Database.MongoDB |
| readHostPortM | Database.MongoDB.Connection, Database.MongoDB |
| ReadStaleOk | Database.MongoDB.Query, Database.MongoDB |
| readStream | System.IO.Pipeline |
| Reduce | Database.MongoDB.Query, Database.MongoDB |
| ReduceFun | Database.MongoDB.Query, Database.MongoDB |
| RegEx | Database.MongoDB |
| Regex | |
| 1 (Data Constructor) | Database.MongoDB |
| 2 (Type/Class) | Database.MongoDB |
| removeUser | Database.MongoDB.Admin, Database.MongoDB |
| renameCollection | Database.MongoDB.Admin, Database.MongoDB |
| repairDatabase | Database.MongoDB.Admin, Database.MongoDB |
| Replace | Database.MongoDB.Query, Database.MongoDB |
| replace | Database.MongoDB.Query, Database.MongoDB |
| ReplicaSet | Database.MongoDB.Connection, Database.MongoDB |
| ReplicaSetName | Database.MongoDB.Connection, Database.MongoDB |
| replSetName | Database.MongoDB.Connection, Database.MongoDB |
| Reply | |
| 1 (Type/Class) | Database.MongoDB.Internal.Protocol |
| 2 (Data Constructor) | Database.MongoDB.Internal.Protocol |
| repsert | Database.MongoDB.Query, Database.MongoDB |
| Request | Database.MongoDB.Internal.Protocol |
| ResponseFlag | Database.MongoDB.Internal.Protocol |
| rest | Database.MongoDB.Query, Database.MongoDB |
| rFinalize | Database.MongoDB.Query, Database.MongoDB |
| rLimit | Database.MongoDB.Query, Database.MongoDB |
| rMap | Database.MongoDB.Query, Database.MongoDB |
| rOut | Database.MongoDB.Query, Database.MongoDB |
| routedHost | Database.MongoDB.Connection, Database.MongoDB |
| rReduce | Database.MongoDB.Query, Database.MongoDB |
| rResponseFlags | Database.MongoDB.Internal.Protocol |
| rScope | Database.MongoDB.Query, Database.MongoDB |
| rSelect | Database.MongoDB.Query, Database.MongoDB |
| rSort | Database.MongoDB.Query, Database.MongoDB |
| rStartingFrom | Database.MongoDB.Internal.Protocol |
| runCommand | Database.MongoDB.Query, Database.MongoDB |
| runCommand1 | Database.MongoDB.Query, Database.MongoDB |
| runMR | Database.MongoDB.Query, Database.MongoDB |
| runMR' | Database.MongoDB.Query, Database.MongoDB |
| rVerbose | Database.MongoDB.Query, Database.MongoDB |