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elixir [45]
3 years ago
7

Write a SELECT statement that returns one row for each category that has products with these columns: The CategoryName column fr

om the Categories table The count of the products in the Products table The list price of the most expensive product in the Products table Sort the result set so the category with the most products appears first.
Computers and Technology
1 answer:
Advocard [28]3 years ago
4 0

Answer:

SELECT C.CategoryName,COUNT(P.CategoryID) AS NumberOfProducts, MAX(P.ListPrice) AS

MostExpensiveProduct

FROM Categories C, Products P

WHERE P.CategoryID=C.CategoryID

GROUP BY C.CategoryName ORDER BY COUNT(*) desc;

Explanation:

This program uses a SELECT statement to arrive at its outout or perform its function.

The SELECT statement helps to return one row for each category that has products.

This is done by Sorting the result set so the category with the most products appears first.

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XYZ Corp.’s facilities in Nashua, New Hampshire, are two office buildings 400 feet apart, each with its own LAN. To connect the
damaskus [11]

Answer:

a: Twisted pair won't span a 400-foot distance.

Explanation:

The maximum distance that twisted pair cables can support without attenuation is 100 meters which is approximately 328 feet and the two office buildings are 400 feet apart, so it is useless to install a twisted pair cable for such a large distance. A much better option would be to install optic fiber. Though it is a bit expensive but it is the best option in this case.

Hence option (a) is the correct reason for installing an optic fiber cable rather than a twisted pair cable.

6 0
3 years ago
Why do software developers prefer to use high-level language to author programs?
Charra [1.4K]

Answer:

The answer to this question is given below in the explanation section

Explanation:

The correct answer to this question is: it used a more English-like syntax.

The software developer use high-level language to develop or author the program because it is more likely to English syntax and it would be easy for a software developer to author a program easily instead of using low level language and remembering ones and zeros.

Other options are not correct because:

It can be used on computers without microprocessors: Each computer has a microprocessor either you develop a program using high-level or low-level languages. Changes and modifications are easy in high-level language than in low-level languages. so, the option that prevents anyone from making changes to the software later is wrong.  However, high-level languages are less complicated in learning and in authoring the programs but it does not use zeros and ones, it uses English-like syntax. So, the last option is also wrong.  

4 0
2 years ago
Need Help!
Aleksandr-060686 [28]

Answer:

A and C are the only <u>legal</u> but unethical options

4 0
3 years ago
A lot of computations involve processing a string one character at a time. Often they start
dedylja [7]

Answer:

The last character in the string processed is "t".

Explanation:

The index start from 0 and the len(fruit) is 5.

When index is 0 which is less than 5; "f" is printed

When index is 1 which is less than 5; "r" is printed

When index is 2 which is less than 5; "u" is printed

When index is 3 which is less than 5; "i" is printed

When index is 4 which is less than 5; "t" is printed

When index is 5, the condition is false; so the loop content is not executed.

Therefore, the last character traversed in the string "fruit" is "t".

3 0
3 years ago
Write the code to produce a for loop that counts down from 20 to 0 by 2’s and prints the number each time it goes through the lo
yulyashka [42]

Explanation:

Count-controlled for loop (Three-expression for loop)

This is by far the most common type. This statement is the one used by C. The header of this kind of for loop consists of a three-parameter loop control expression. Generally it has the form:

for (A; Z; I)

A is the initialisation part, Z determines a termination expression and I is the counting expression, where the loop variable is incremented or dcremented. An example of this kind of loop is the for-loop of the programming language C:

for (i=0; i <= n; i++)

This kind of for loop is not implemented in Python!

Numeric Ranges

This kind of for loop is a simplification of the previous kind. It's a counting or enumerating loop. Starting with a start value and counting up to an end value, like for i = 1 to 100

Python doesn't use this either.

Vectorized for loops

They behave as if all iterations are executed in parallel. This means, for example, that all expressions on the right side of assignment statements get evaluated before the assignments.

Iterator-based for loop

Finally, we come to the one used by Python. This kind of a for loop iterates over an enumeration of a set of items. It is usually characterized by the use of an implicit or explicit iterator. In each iteration step a loop variable is set to a value in a sequence or other data collection. This kind of for loop is known in most Unix and Linux shells and it is the one which is implemented in Python.

Example of a simple for loop in Python:

>>> languages = ["C", "C++", "Perl", "Python"]  

>>> for x in languages:

...     print(x)

...  

C

C++

Perl

Python

>>>

3 0
3 years ago
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