Answer:
Explanation:
a)use order by clause for sorting
for $x in doc("books.xml")/bib/book order by xs:float($x/price) return $x/title (default sorted in ascending order)
or
for $x in doc("books.xml")/bib/book order by xs:float($b/price) descending return $b/title (sorted in descending order)
b)doc("books.xml")//book[author = 'Abiteboul']
c)for $x in distinct-values(doc("bib.xml")/bib/book/author)
return <res>
<name>{$x}</name>
<count>
{count (doc("bib.xml")//book[exists(indexof(author,$x))]) }
</count>
<res>
Answer:
Reduced processor lifespan, reduced fan cooler performance over time, bugs.
Explanation:
The reason is that when you overclock your processor you are increasing its base speeds in GHZ. The processor was designed to work at a determined speed, let's say 3.00 ghz. If you increase this speed to 4.00 ghz, it's not just that now it's working faster, it also draws more power from your power supply, and increases the heat that the chip is taking. Processors are designed to endure high temperatures, therefore, you will likely not see any damaged in short term, but your components life span will be severely reduced, also depending on how much you overclock the processor, and the stability of your system, you can see bugs, unexpected restarts, and strange behavior of the computer. As an example, the i5 4670k runs at 3.80 stock speed, it can reach 50 / 65 degrees under full load. If you raise the speed up to 4.5ghz it will reach 70/80 degrees, depending on your ambient temperature and other factors.
Answer: Reusing software device has some economical challenges such as:
- Investment cost in reusing the device is considered as the extra cost.It might require some extra components for the working to become usable
- Requires skilled person who can develop and design the software to be used again.The creating and designing of new software design is comparatively easy but making the system reusable requires someone who has more designing skill who will be highly paid for the work
- Cost of writing and reading of the software can also be considered as the economical challenge as the reused system created is to be studied by some other organization members or sources not familiar with the functioning. .
You could download it to another device, and send the music to the laptop. That, or you can plug it into the USB port.
I hope this helps!
