What problems do DCOM and CORBAhave? How canWeb services solve this problem?

What will be an ideal response?


Although DCOM and CORBA enable communication among distributed components,
interoperability (the ability to communicate and share data with software from different
vendors and platforms) is limited in both, because DCOM and CORBA cannot
intercommunicate easily. This has impeded distributed computing’s ability to facilitate business-
process integration and automation.Web services improve distributed computing capabilities
by addressing the issue of limited interoperability. Unlike DCOM and CORBA,Web
services operate using open (i.e., nonproprietary) standards. This means that Web services
can, theoretically, enable any two software components to communicate—regardless of the
technologies used to create the components or the platforms on which the components
reside. The industry’s experience with interoperability problems led to the development of
open standards for Web services technologies, in an effort to enable cross-platformcommunication.
The primary standard used inWeb services is XML,a language for marking up data so
that information can be exchanged between applications and platforms. Microsoft and
DevelopMentor built the XML-based Simple Object Access Protocol (SOAP) as a messaging
protocol for transporting information and instructions between Web services. Two other
Web services specifications—Web Services Description Language (WSDL) and Universal
Description, Discovery and Integration (UDDI)—are also based on XML.WSDL provides a
standard method of describing Web services and their specific capabilities; UDDI defines XML-based rules for building directories in which companies advertise themselves and their
Web services

Computer Science & Information Technology

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Match the following ways of interacting on the Internet with their descriptions:

I. Blog II. Vlog III. Email IV. IM V. VoIP A. An online journal that uses video as the primary content in addition to text B. A form of asynchronous electronic communication sent over the Internet that is centrally stored and archived C. A type of Internet communication that represents an online journal D. A form of Internet communication that enables you to use your Internet connection as a telephone to make domestic or international calls E. A form of Internet communication that enables synchronous communication between two people

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Use SQL:2003 (with the MULTISET construct, if necessary) to complete the schema partially de?ned in Section 14.4. Include UDTs for the following tables: Person, Student, Course, Professor, Teaching,andTranscript. Your solution should followthe object-oriented design methodology. Repeating the statements from Chapters 3 and 4, which use SQL-92, is not acceptable.

What will be an ideal response?

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Each ____________________ element you include within a

element creates a separate row.

Fill in the blank(s) with the appropriate word(s).

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External hard drives typically have more storage capacity than USB drives.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology