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.
Answer:
Level of operation
Explanation:
The operating system is the system that enables other software to run on a device. It therefore handles the data between the user and the different features of the hardware, such as hosting device drivers. It also determines the core language used on the device, such as Windows, apple or Linux. This provides conformity accross devices allowing software and hardware companies to produce compatible products.
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Answer:
The answer is 15
Explanation:
A integer is a whole number, the only wholenumber present is 15
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