1.1 Glossary

This document uses the following terms:

client: A computer on which the remote procedure call (RPC) client is executing.

cluster registry root key: The root key of the cluster registry. The root key is described in [MS-RRP] section

cluster resource: A resource as defined in [MS-CMRP].

cluster resource ID: A Unicode string representing the globally unique ID (GUID) of a cluster resource as specified in [MS-CMRP] section

connection: In OleTx, an ordered set of logically related messages. The relationship between the messages is defined by the higher-layer protocol, but they are guaranteed to be delivered exactly one time and in order relative to other messages in the connection.

connection type: A specific set of interactions between participants in an OleTx protocol that accomplishes a specific set of state changes. A connection type consists of a bidirectional sequence of messages that are conveyed by using the MSDTC Connection Manager: OleTx Transports Protocol and the MSDTC Connection Manager: OleTx Multiplexing Protocol transport protocol, as described in [MS-CMPO] and [MS-CMP]. A specified transaction typically involves many different connection types during its lifetime.

contact identifier: A universally unique identifier (UUID) that identifies a partner in the MSDTC Connection Manager: OleTx Transports Protocol. These UUIDs are frequently converted to and from string representations. This string representation must follow the format specified in [C706] Appendix A. In addition, the UUIDs must be compared, as specified in [C706] Appendix A.

endpoint: A remote procedure call (RPC) dynamic endpoint, as specified in [C706], part 4.

enlistment: The relationship between a participant and a transaction manager in an atomic transaction. The term typically refers to the relationship between a resource manager and its transaction manager, or between a subordinate transaction manager facet and its superior transaction manager facet.

globally unique identifier (GUID): A term used interchangeably with universally unique identifier (UUID) in Microsoft protocol technical documents (TDs). Interchanging the usage of these terms does not imply or require a specific algorithm or mechanism to generate the value. Specifically, the use of this term does not imply or require that the algorithms described in [RFC4122] or [C706] must be used for generating the GUID. See also universally unique identifier (UUID).

GUIDString: A GUID in the form of an ASCII or Unicode string, consisting of one group of 8 hexadecimal digits, followed by three groups of 4 hexadecimal digits each, followed by one group of 12 hexadecimal digits. It is the standard representation of a GUID, as described in [RFC4122] section 3. For example, "6B29FC40-CA47-1067-B31D-00DD010662DA". Unlike a curly braced GUID string, a GUIDString is not enclosed in braces.

higher-layer business logic: The application functionality that invokes the functionality that is specific to this protocol.

key: In the registry, a node in the logical tree of the data store.

key value: A named value of a registry key, as specified in [MS-RRP] section and [MS-CMRP] section

message: A data structure representing a unit of data transfer between distributed applications. A message has message properties, which may include message header properties, a message body property, and message trailer properties.

mutual authentication: A mode in which each party verifies the identity of the other party, as described in [RFC3748] section 7.2.1.

Name Object: An object that contains endpoint contact information (as specified in [MS-CMPO] section

OleTx: A comprehensive distributed transaction manager processing protocol that uses the protocols specified in the following document(s): [MS-CMPO], [MS-CMP], [MS-DTCLU], [MS-DTCM], [MS-DTCO], [MC-DTCXA], [MS-TIPP], and [MS-CMOM].

protocol participant: An implementation of one of the protocol roles defined in a specification.

registry: A local system-defined database in which applications and system components store and retrieve configuration data. It is a hierarchical data store with lightly typed elements that are logically stored in tree format. Applications use the registry API to retrieve, modify, or delete registry data. The data stored in the registry varies according to the version of the operating system.

registry path: The path to a registry key in the registry.

server: A computer on which the remote procedure call (RPC) server is executing.

service: A process or agent that is available on the network, offering resources or services for clients. Examples of services include file servers, web servers, and so on.

Service Control Manager (SCM): An RPC server that enables configuration and control of service programs.

session: In OleTx, a transport-level connection between a Transaction Manager and another Distributed Transaction participant over which multiplexed logical connections and messages flow. A session remains active so long as there are logical connections using it.

subkey: A child node in the logical tree of the hierarchical data store.

transaction: In OleTx, an atomic transaction.

transaction identifier: The GUID that uniquely identifies an atomic transaction.

transaction manager: The party that is responsible for managing and distributing the outcome of atomic transactions. A transaction manager is either a root transaction manager or a subordinate transaction manager for a specified transaction.

transaction monitoring: The functionality that allows the state and progress of transactions managed by a transaction manager to be monitored.

value: A data element associated with a key.

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.