Answer:A couple disadvantaged are the migraines that is can cause. And it can cause eye strain there are alot of things that could hurt your eyes. Like being in virtual reality for to long. It can very rarely make you go blind.
Explanation: sorry if its wrong
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:HUMAN RESOURCES AND PROCEDURE COMPONENTS
Explanation: Information systems are known to contain five components, these components help to describe the various aspects and importance of Information systems.
They Include The DATABASE AND DATA WAREHOUSE components(act as the store for all data), The COMPUTER HARDWARE(the physical components of the information systems such as computer harddrive etc)
THE COMPUTER SOFTWARE( the software which includes all the non physical and intangible assets of the information system),
THE HUMAN RESOURCES AND PROCEDURES COMPONENT( which gives instructions to the users).
THE TELECOMMUNICATIONS.
