Answer:
The first one I'm sorry if I'm wrong
<em><u>true</u></em>
Explanation:
<em><u>because</u></em><em><u> </u></em><em><u>logical</u></em><em><u> </u></em><em><u>errors</u></em><em><u> </u></em><em><u>are</u></em><em><u> </u></em><em><u>made</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>be</u></em><em><u> </u></em><em><u>unexpected</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>was</u></em><em><u> </u></em><em><u>before</u></em>
Answer:
(a) Correlated.
Explanation:
Correlated subquery :These sub queries reference columns from outer table or uses values from outer query.These sub queries are processed atleast once for every row processed.So because of this reason correlated sub queries can be slow.Since the query in the question also uses value from the outer query so it is a correlated query.
Answer:
To see who reads the file, open “Windows Event Viewer”, and navigate to “Windows Logs” → “Security”. There is a “Filter Current Log” option in the right pane to find the relevant events. If anyone opens the file, event ID 4656 and 4663 will be logged.
When you let the mouse pointer
pause for a moment or two over an item, it is called Hovering. Hovering means
positioning the pointer to a specific object without clicking yet any mouse
buttons. You also do not move it for at least a second. Hovering the mouse
pointer may have the targeted object display its infotip or tooltip.
