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.
A database is used to organize a large collection of data, hence the name database. It is literally a base that would contain a chunk of data that a person or an organization will need to pull out later when they need it. Databases are usually used by companies or organizations
Answer:
A constructor doesn't have a return type.
The name of the constructor must be the same as the name of the class.
Unlike methods, constructors are not considered to be members of a class.
A constructor is called when a new instance of an object is created.
Explanation:
The answer is performing arithmetic and logical operations
