CORBA 2.6.1 Glossary

A request style in which the client constructs a request at runtime, not needing to know the object
interface (the calling sequences for requesting specific operations) at compile time.
dynamic link library (DLL)
A way of packaging application functions that lets the functions be loaded into a process at
runtime rather than at compile time. Such functions can be unloaded when they are no longer
required in the application while the rest of the application continues to run.
Dynamic Skeleton Interface (DSI)
A way to deliver requests from an ORB to an object implementation that does not have
compile-time knowledge of the type of the object it is implementing. This contrasts with the
type-specific, OMG IDL-based skeletons, but serves the same architectural role. DSI is the server
sides analogue to the client sides Dynamic Invocation Interface (DII).
encapsulation
The localization of knowledge within a module. Because objects encapsulate data and
implementation, the user of an object can view the object as a black box that provides services.
Instance variables and methods can be added, deleted, or changed, but as long as the services
provided by the object remain the same, code that uses the object can continue to use it without
being rewritten.
encipherment
See encryption.
encryption
Generation of ciphertext from corresponding cleartext by application of a cryptographic algorithm
and a key.
entity object
A type of object that represents external data, such as a database record or an external device.
environment parameter
A CORBA-defined variable included in method invocations to receive exception information.
environment structure
A CORBA-defined variable included in method invocations to receive exception information.
environment variable
An element of a system or product-specific configuration file used to specify the path to a
processing component or to control some aspect of system or product operation. For example, you
use an environment variable in the OSS profile file to specify the location of the NonStop CORBA
configuration file.
EnvironServer
See NSDEnvironServer.
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