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3. 3 of 25 ORBs (Object Request Broker) – A distributed software bus for communication among middleware services and applications – To manage communication – Mediate messages between objects IDL (Interface Definition Language) – IDL is the standard notation for defining software interfaces. – Component implementations support Stubs (Client Side) and Skeletons (Server Sides) – To implement the inter-process communication – Encode and decode the messages through the ORB

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11. 11 of 25 These new port mechanisms significantly enhance component reusability when compared to the traditional CORBA object model. A CORBA Component

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15. 15 of 25  It defines a set of interface APIs that simplify task of developing and/or configuring CORBA applications.  Components are implemented as DLLs  Containers are Standard interfaces for packaging & deploying components

16. 16 of 25 Persistent Containers : – Their states are saved between invocations. Transient Containers : – They are non- persistent components whose states are not saved at all.

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21. 21 of 25 designers implementer packagerdeployer

22. 22 of 25 Like Microsoft’s Component Object Model (COM) Have several input & output interfaces per component Component But has more effective support for distribution & QoS properties Like Microsoft’s.NET Framework Could be written in different programming languages Could be packaged to be distributed But runs on more platforms than just Microsoft Windows

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