| idempotent | FoundationDB.Transaction, FoundationDB |
| includePortInAddress | FoundationDB.Options.TransactionOption |
| IncompatibleProtocolVersion | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| Incomplete | FoundationDB.Versionstamp.Internal, FoundationDB.Versionstamp |
| IncompleteVersionstamp | FoundationDB.Versionstamp.Internal, FoundationDB.Versionstamp |
| incompleteVersionstampPos | FoundationDB.Layer.Tuple.Internal |
| IncompleteVS | FoundationDB.Layer.Tuple.Internal, FoundationDB.Layer.Tuple |
| incrLength | FoundationDB.Layer.Tuple.Internal |
| initializeDirectory | FoundationDB.Layer.Directory.Internal |
| initializeNewDatabase | FoundationDB.Options.TransactionOption |
| initStart | FoundationDB.Layer.Directory.Internal.HCA |
| Int | FoundationDB.Layer.Tuple.Internal, FoundationDB.Layer.Tuple |
| InternalError | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| InvalidDatabaseName | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| InvalidLocalAddress | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| InvalidMutationType | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| InvalidOption | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| InvalidOptionValue | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| InvertedRange | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| IOError | FoundationDB.Error.Internal, FoundationDB.Error, FoundationDB |
| isError | FoundationDB.Internal.Bindings |
| isPrefixFree | FoundationDB.Layer.Directory.Internal |
| isRangeEmpty | FoundationDB.Transaction, FoundationDB |