You should avoid deleting the unknown files to store your personal files and folders because if you delete that files it may be critical position with computer.
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System software are software that can be installed and run separately
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:
Static
Explanation:
A computer or system administrator who want packets to be filter have to set or configured a filtering rules which will enable and allow the firewall to decide on which of the packets that will be allowed to function and the packets that will be denied not to function to be developed and as well installed on the firewall have to make use of what is called STATIC FILTERING reason been that STATIC FILTERING make it of necessary that the filtering rules should be developed and installed with the firewall.
