Exam 17: Client-Server Processing and Distributed Databases

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____________ is an architecture that supports electronic commerce among organizations.A set of related Internet standards supports high interoperability among service requestors,service providers,and service registries.

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Intranets differ from the Internet in that they do not use TCP or IP protocols to communicate.

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In the Web Services Architecture,the WSFL,UDDI,WSDL,and SOAP standards are ________ compliant languages.

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A SQL query with local format transparency needs to specify:

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The two-phase commit protocol involves a voting phase and a decision phase which must be coordinated by a centralized coordinator site.

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Which of the following is not a goal of distributed data?

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In client-server database development,proprietary methods typically allow for easier resolution of problems because one vendor is responsible,but these methods may prove to be expensive and inflexible in the long run.

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When the primary copy protocol is used for replicated data,secondary copies are updated at the same time as the primary copy to keep the database consistent.

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Fragmentation transparency requires the least effort from the user to write SQL commands for a specific task,but requires the most work for the DBMS.

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The following features permitted distributed processing in the 1980s:

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_________ code is code to ensure completion of business processes.____________ code may route forms,send messages about a deadline,and notify users when a business process is completed.

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Which of the following is true of a fragment in a distributed DBMS?

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PC clients in a two-tier architecture are sometimes called "thin clients" because of the large amount of business logic they contain.

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Distributed DBMSs must conform to the Three Schema Architecture just like traditional DBMSs do.

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_____________________ is the highest level of data independence in distributed DBMSs,and is so transparent that users perceive the distributed database as a centralized database.

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The interoperability among clients and servers and the efficient processing of messages between them is referred to in a client-server architecture as ___________________.

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