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3 years ago

Which would take more storage space, a layer file showing all the us counties or a layer file showing all the us states?

1 answer:

5 0

All counties. Much more info. Although most layers are just excel files with geographical reference data in them. That one file may be several MB as the state file may be 1mb or less

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A business letter is not written:

Andreas93 [3]

Answer: the answer is b

Explanation:Bc why would they make a business letter 2 someone else

5 0

3 years ago

It connects computers in different cities and different countries

svetoff [14.1K]

Answer:

I think VPN firewall devices can do that.

5 0

3 years ago

Read 2 more answers

The camera on a phone or laptop can be used to track a user's eye movements. Which of these is NOT one of the possible applicati

AnnyKZ [126]

Answer:

The question is incomplete. The full question is the following one:

"The camera on a phone or laptop can be used to track a user's eye movements. Which of these is NOT one of the possible applications of this technology (as listed in the course reading):

All of these ARE:

Measuring the user's intelligence,

Gathering marketing information for advertisers,

Detecting cognitive disorders."

The correct answer is: "Measuring the user's intelligence".

Explanation:

This technology is also known as eye tracking technology and has to do with a sensor that tracks eye movement and interaction with machines, such as mobiles and computers. The only option which does not apply to this technology and its features is the first one, "Measuring the user's intelligence", because "intelligence" is very subjective and abstract, it is not something a sensor can measure, although eye tracking technology can measure the amount of production concerning certain topics, the level of interest, attention, and interaction, and some cognitive disorders people behave, such as Attention Deficit Hyperactivity Disorder (ADHD). Besides that, companies, agencies, and institutional systems may track and gather people's eye movements in order to share them with other companies, agencies, and institutions for improving marketing, production, and interests.

(ps: mark as brainliest, please?!)

8 0

3 years ago

A sequence of repetitive operations performed to evaluate the ability of a PC to operate at peak efficiency for a defined time p

iragen [17]

Answer:

False.

Explanation:

The description provided matches better with Software performance testing, and shouldn't be confused with a benchmark.

In computing, a benchmark is a tool or software designed to measure the average performance of another program, by running several tests and trials against it.

A performance testing is designed to measure the performance and responsiveness of a computer system (not a program) under a heavy workload.

8 0

3 years ago

A blood bank maintains two tables - DONOR, with information about people who are willing to donate blood and ACCEPTOR, with info

Kipish [7]

Answer:

The sql query is given below.

Since we need to count of males and females for a particular blood group, we put xxx for the blood group.

SELECT COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "M%") as Male_Donors,

COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "F%") as Female_Donors

FROM DONOR

WHERE BG = xxx;

Explanation:

The clauses in the query are as follows.

1. SELECT: all the columns required in the output are put in this clause.

2. FROM JOIN ON: the table(s) from which the above columns are taken are put in this clause.

3. WHERE: any condition required to filter the output is put in this clause.

The query is explained below.

1. Find the number of male donors. Number of anything can be found using COUNT() function. A query is required since gender is included in deciding the type of donor.

2. The query is defined to find number of male donors as follows.

COUNT( SELECT DID FROM DONOR WHERE GENDER LIKE "M%"; )

3. In the previous query, LIKE operator is used since it is not defined what value is stored for male donors.

4. Similarly, the query to find the number of female donors is formed.

COUNT( SELECT DID FROM DONOR WHERE GENDER LIKE "F%"; )

5. Next, the final query is formed as follows.

SELECT: both COUNT() functions will come here.

FROM: table name

WHERE: specific blood group will be put here

GROUP BY: this clause is optional and is not used in this query.

HAVING: this clause is optional and is not used in this query.

6. The query after putting all clauses is shown below.

SELECT COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "M%"),

COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "F%")

FROM DONOR

WHERE BG = xxx;

7. Alias is used in the above query for each column to get the final query.

SELECT COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "M%") as Male_Donors, COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "F%") as Female_Donors

FROM DONOR

WHERE BG = xxx;

7 0

3 years ago