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:
A. Consult data disposition policies in the contract.
Explanation:
The disposition of data should be carefully handled. The data associated with government project should be handled with care as it may include sensitive information. To destroy the data the company should refer the agreement and see if there is any notes included regarding the data disposition policy. The course of action to destroy the data should be according to the agreement.
A formula key components are:
- Functions
- References
- Operators
- Constants.
<h3>What is a formula?</h3>
This is known to be a kind of mathematical relationship or rule that is said to be expressed in form of symbols.
Therefore, A formula key components are:
- Functions
- References
- Operators
- Constants.
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