When Moving Data from Permanent Storage to RAM,an I/O Disk

question 55

Multiple Choice

When moving data from permanent storage to RAM,an I/O disk operation retrieves:

• A)an entire table.
• B)an entire physical disk block.
• C)only the row containing the attribute requested.
• D)only the attribute which was requested.

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Definitions:

Authentication

The process of identifying a computer user, based on a login or username and password. The computer system determines whether the computer user is authorized and what level of access is to be granted on the network.

Web

A vast network of interconnected documents and resources, accessed via the Internet through web browsers.

Cloud

A network of remote servers hosted on the Internet to store, manage, and process data, rather than on a local server or a personal computer.

Database

A digital collection of related data that can be stored, sorted, organized, and queried.