Answer:
c. This would reduce the number of tuples to involve in the join resulting in a more efficient query.
Explanation:
SQL or structured query language is a database querying language used to communicate or interact with databases. A database query could be as simple as returning all the columns from a database table to complex like joining several query results which in turn forms an algebra expression.
Every query statement or expression is executed with time, execution time needs to be minimized for efficiency, so, a well-arranged and reduced joining in the query improves the efficiency of the query.
Answer:
The answer is A. True.
Explanation:
Information systems security,refers to all the methods involved with assuring information integrity as well as keeping it confidential, and available.
It can also be defined as -
The detection and provisoon of solutions to security breaches.
Access controls, which prevents unauthorized system access.
Protection of information either in transit or in a storage area.
<span>Regularly schedule "fire drills" to restore information from backup
Keep it away from Dusty areas
Have a battery back up system
P</span><span>rotect equipment from static electricity that can erase data or damage components.
Hope that answers your question
</span>
Graphical user interface.
Hope I helped :)
A good website to learn coding is called Lynda.com. It costs money but its well worth it!
