MICROWAVE COMMUNICATION QUIZ

Poor data administration can lead to which of the following?

Missing data elements

A single definition of the same data entity

All of these

Familiarity with existing data

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A traditional data administrator performs which of the following roles?

Establish backup and recovery procedures

Resolve data ownership issues

Tune database performance

Protect the security of the database

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The restore/rerun technique involves reprocessing the day's transactions up to the point of failure.

True

False

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Which of the following is the preferred way to recover a database after a system failure?

Rollback

Switch to duplicate database

Rollforward

Reprocess transactions

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The greatest threat to business security is often internal rather than external.

False

True

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With concurrent processing involving updates, a database with concurrency control will be compromised due to interference between users.

False

True

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Which of the following is true concerning open-source DBMS?

Is not competitive against PC-oriented packages and is fully SQL compliant

Is free or nearly free database software whose source code is not publicly available

Is free or nearly free database software whose source code is publicly available

Is competitive against PC-oriented packages and is not fully SQL compliant

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Which of the following could cause data to be unavailable?

The database server

All of these

Data becoming lost or inaccurate

Planned database maintenance activities

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If both data and database administration exist in an organization, the database administrator is responsible for which of the following?

Database design

All of these

Data modeling

Metadata

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A shared lock allows which of the following types of transactions to occur?

Delete

Read

Insert

Update

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YOUR ANSWER : ?