Middleware is software that connects applications running on different operating systems and networks. It provides services that allow applications to communicate with each other by hiding the complexity of the operating systems and networks. Common types of middleware include remote procedure calls, message-oriented middleware, object request brokers, and transaction processing monitors. Middleware is used by many large companies like IBM and Oracle and provides benefits such as increased flexibility, reduced costs, and improved management of IT services.

1. Middleware

2. Table of contents Overview Famous organisation in middle ware IBM oracle Uses Types remote procedure call Message oriented middleware Object request broker Transaction Processing Examples Platforms My conclusion

4. Consists of a set of enabling services

5. Allow multiple processes running on one or more machines to interact with each other

6. Middleware services are sets of distributed software

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10. Cont... Middleware services provide a more functional set of API than OS and network services to allow an application to – Locate transparently across the network, providing interaction with other application or service Be independent from network services.

12. * IBM SOA Integration Services

13. * IBM IT Lifecycle Management and Governance Services

14. * IBM Information on Demand Infrastructure Services

15. * IBM Infrastructure Optimisation Services

16. B enefits # Increase business flexibility and decrease IT complexity # Reduce the costs of business integration # Simplify integration through IBM lifecycle methodologies and tool expertise # Improve the management of infrastructures

17. Cont... * Improve time to value and make the most of existing technology skills * Increase visibility and improve management and quality of IT services * Create an IT infrastructure designed to address regulatory requirements * Increase the value of existing IT investments * Enhance information availability, quality and value

18. Uses... Middleware services provide a more functional set of API to allow an application to: * Locate transparently across the network, thus providing interaction with another service or application * Be independent from network services * Be reliable and always available * Add complementary attributes like semantics

20. Message oriented middleware(MOM)

21. Object request brokers(ORBs)

22. Transaction Processing (TP) monitors.

24. Allows a computer program to cause a subroutine or procedure to execute in another address space without the programmer

25. Explicitly coding the details for this remote interaction.

26. RPC 3/2/2008 Varun Arora @ SICSR M.Sc.(CA)2007-’09 T R A N S P O R T N E T W O R K N E T W O R K T R A N S P O R T RPC Stub RPC Stub Application Application Server Application specific procedure invocations and returns

28. sends a request message to a known remote server to execute a specified procedure with supplied parameters.

29. The remote server sends a response to the client,

30. the application continues its process.

31. Cont...

33. monitors transaction programs

35. Reliability

36. Controlled processing

37. The processing in a TPS must support an organization's operations

38. TP Monitors - Demonstration Database Processing Routines Client Client Client Client Client Transaction Processing Monitor

39. ORB It is a piece of middleware software that allows programmers to make program calls from one computer to another via a network.

40. ORB Client Application Remote Service (Object) ORB Locate service Activate service communicate Establish connection

42. Reduces complexity of applications spanning operating systems and network protocols by insulating them from un-necessary details.

44. Providing the directory, security, and administrative services required to support messaging.

45. MOM Queue MOM Provider Message Message Application A (Client A) Application B (Client B) A P P L I C A T I O N M O M A P I T R A N S P O R T N E T W O R K A P P L I C A T I O N M O M A P I T R A N S P O R T N E T W O R K

47. Flexible

48. Portability

49. Interoperability

50. Reduces Complexity

52. Sonic MQ

53. MS MQ

54. Java Message Queue

55. MOM - Architecture Database Transaction J2EE Application Middle Layer Listener Listener Message Message Message Message Message Process C Process B Process A A P P L I C A T I O N 1 2 3 4 5 6 7 8 0 9 C B A Q1 Q2

57. Java’s database connectivity API : JDBC

58. Remote computation products - e.g ONC RPC, OSF RPC and RMI (Java Remote Method Invocation)

59. Distributed Computing Environment (DCE) products, Common Object Request Broker Architecture (CORBA), Distributed Component Object Model (DCOM)

60. TP - Monitors

61. Platforms * Enterprise JavaBeans (EJB) * Microsoft .NET * Microsoft .NET Micro Framework * CORBA

62. My conclusion Middleware is independent of network services While creating mashup we need to use app server for connecting the browser and client So there may be a chance of bottlenecks For this reason middleware is best for mashup techinques