CORBA 2.6.1 Glossary

kinds of security policies, including access control policy, audit policy, message protection policy,
non-repudiation policy, etc.
security service
An application service that verifies user identity as a means of restricting certain operations to
users who have proper identification (authentication).
sequence
An IDL data type that is essentially a one-dimensional array of specified maximum size and
length. IDL sequences can be bounded or unbounded. They are mapped to a Java class that has a
current length. In C++ they are mapped to a class that has a current length, a maximum length, and
a _var type for the data.
servant
An instance of a CORBA object. A servant resides in a server and handles and responds to a
particular request from a client.
servant manager
A POA component that acts on demand from the ORB to activate or deactivate servants. The
servant manager associates an ORB object with the appropriate servant. The two types of
managers are ServantActivator and ServantLocator. POA policies determine which manager is
used.
server
In distributed object technology, an application component that satisfies the requests of a client by
providing an execution space (hosting) one or more objects invoked by the client. More generally,
an application component that services the requests of a client. A server program is the source
code for a server.
server class
A NonStop TS/MP term synonymous with a server pool.
server event handler
An object, defined by the NonStop CORBA event framework to support asynchronous
communication between a NonStop CORBA server and a client that uses other technology, that
transfers data across a connection established by a listener event handler. Server event handlers
and listener event handlers are used in legacy client wrappers.
server event-handler user
An object, defined by the NonStop CORBA event framework, that uses the services of a server
event handler. A legacy client wrapper typically acts as both a server event-handler user and a
listener event-handler user.
server pool
A set of processes that execute the same program in parallel to increase the throughput and
fault-tolerance of an application. A NonStop CORBA application can use server pools managed by
NonStop Transaction Services/MP (NonStop TS/MP).