Answer:
The answer to the following question is the option "b".
Explanation:
In the computer system, Hard disks stand for the hard disk drive. It is also known as a hard disk. It locates inside the computer case. The hard disk drive is used to store an electromechanical data. That uses magnetic storage device that store and retrieve data. So the answer to this question is hard disks.
Answer C in the paragraph group on the home tab
Answer:
Answer is Mobile commerce
Enroll a student identified by her snum into the class named 'Introduction to Database Systems' is the following transactions, state the SQL isolation level you would use.
1. Enroll a student identified by her snum into the class named 'Introduction to Database Systems'.
<u>Explanation:</u>
Since enroll is unique in the university enrollment database schema and field name is SNUM and it is data type is an integer. To identify student class name and department name and name of student SNUM field is used for searching in university enrollment database schema. Enrollment changing is not possible of the student’s not possible or not good practices in university enrollment database schema.
If a query had been made class wise or department wise enrollment is played an important role.
For assign, a faculty is made on the class id or department id.
