Index | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| rational number: | a number that can be written as an integer divided by a non-zero integer |
| real-time system: | an interactive system for which time constraints on actions are particularly tight or in which the slightest timing failure cannot be tolerated. |
| region: | an area of contiguous virtual memory that is accessible by the threads of the owning process. |
| remote procedure calling (RPC): | a communication construct that conceals operations behind a procedure-calling abstraction and is implemented in terms of a request-reply protocol. |
| replica manager: | a process that holds replicas of data items and performs operations on them directly. |
| replication transparency: | a type of transparency that enables multiple instances of information objects to be used to increase reliability and performance without knowledge of the replicas by users or programs |
| request protocol: | an RPC exchange protocol used when no confirmation or value is required from the executed procedure |
| request-reply protocol: | an RPC exchange protocol that uses the server reply message as an acknowledgement of the client request message |
| request-reply-acknowledge protocol: | an RPC exchange protocol that uses the a separate acknowledgement message in addition to the request and reply message |
| resource manager: | a software module that manages a set of resources of a particular type |
| resource sharing: | a situation in which multiple entities within a distributed system use the same set of hardware, software, and/or data |
| RMI: | Remote Method Invocation -- the technology that enables a program to execute a method of an object on a different system |
| role: | one end of an association |
| RPC: | Remote Procedure Calling |
| Russell's Paradox: | A logical contradiction in set theory discovered by the British mathematician Bertrand Russell (1872-1970). If R is the set of all sets which don't contain themselves, does R contain itself? If it does then it doesn't and vice versa. |