Which of the Following Queries Will Select All Counties That

question 1

Multiple Choice

Which of the following queries will select all counties that have a population with more than 100,000 persons (from a layer called POP) as well as all counties that have more than 100,000 housing units (from a layers called HOUSES) ?

• A)POP > 100000 AND HOUSES > 100000
• B)(POP AND HOUSES)> 100000
• C)POP > 100000 OR HOUSES > 100000
• D)POP > 100000 XOR HOUSES =< 100000

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Definitions:

Galvanometers

Instruments used to detect and measure small electric currents by deflection of a pointer in the presence of magnetic fields.

Wattmeter

A meter used to measure true power or watts.

True Power

Generally expressed as watts. Describes the amount of electrical energy converted into some other form.

Ohmmeter

An instrument for measuring electrical resistance in ohms.