Question 1

___________________ is a concurrency control protocol for distributed transactions in which write locks are necessary only for the replicated fragment that has been designated as the primary copy.

Accepted Answer

The answer of ___________________ is a concurrency control protocol for...

Question 2

_________ 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.

Accepted Answer

The answer of _________ code is code to ensure completion...

Question 3

_______________ provide a high level of interoperability and message intelligence.They also resolve platform differences between a client and a server.

Accepted Answer

The answer of _______________ provide a high level of interoperability...

Question 4

A level of data independence in distributed DBMSs in which queries can be formulated without knowing the locations or local formats of the fragments is _______________________.

Accepted Answer

The answer of A level of data independence in distributed...

Question 5

In a loosely integrated distributed DBMS environment,a(n)___________________ describes the exportable data at the site and provides conversion rules to translate data from a local format into a global format.

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The answer of In a loosely integrated distributed DBMS environment,a(n)___________________...

Question 6

A relational algebra operator that is useful for distributed database processing,in which only the rows of the first table appear in the result,is a(n)________________.

Accepted Answer

The answer of A relational algebra operator that is useful...

Question 7

A level of data independence in distributed DBMSs in which queries must specify the fragments and their locations,but not their local format,is known as _____________________.

Accepted Answer

The answer of A level of data independence in distributed...

Question 8

The ______________optimizes query execution across sites,coordinates concurrency control and recovery across sites,and controls access to remote data.

Accepted Answer

The answer of The ______________optimizes query execution across sites,coordinates concurrency...

Question 9

In a distributed database environment,a(n)___________________ can be a query that combines data from more than one site or a transaction that updates data at more than one site.

Accepted Answer

The answer of In a distributed database environment,a(n)___________________ can be...

Question 10

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

Accepted Answer

The answer of In the Web Services Architecture,the WSFL,UDDI,WSDL,and SOAP...

Question 11

____________ 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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The answer of ____________ is an architecture that supports electronic...

Question 12

In a distributed DBMS environment,the ______________________ optimizes query execution across sites,coordinates concurrency control and recovery across sites,and controls access to remote data.

Accepted Answer

The answer of In a distributed DBMS environment,the ______________________ optimizes...

Question 13

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

Accepted Answer

The answer of _____________________ is the highest level of data...

Question 14

A ________ DBMS is a DBMS capable of utilizing tightly-coupled computing resources (processors,disks,and memory).Tight coupling is achieved by networks with data exchange time comparable to the time of the data exchange with a disk.

Accepted Answer

The answer of A ________ DBMS is a DBMS capable...

Question 15

A ___________ is a tight coupling of two or more computers so that they behave as a single computer.

Accepted Answer

The answer of A ___________ is a tight coupling of...

Question 16

A protocol used for distributed commit processing in which the coordinator site and participant sites act in unison to decide to commit or abort their sub-transactions is known as the _________________.

Accepted Answer

The answer of A protocol used for distributed commit processing...

Quiz 17: Client-Server Processing and Distributed Databases