To understand flow of programming logic flow chat technique been used. Once end user starts any learning programming flow chat design been learned and corrected the mistake. After success of flow chat design end user been advice to do programming and tested in computer.
<u>Explanation:</u>
In flow chart design is used for beginner level programming. Some time to make higher level managers to understand this flow chart design is used.
Flow chart has start, procedure, condition, function or procedure and end with stop diagrams.
Flow chart makes end user understand the flow of logics.
Suppose we need to do a process for a procedure, end user has to design with start flow chart symbol and put a procedure flow chart symbol with identification character, then end user has use same identification character and start designing the procedure in the flow chart diagram.
Procedure in flow char design is used to call same procedure number of time, so that repeated coding is avoided.
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:
200 nm
Explanation:
We need a constructive interference to see the bright reflection
we know that
where m=1 and
is the wavelength of the gasoline
so 
putting the value of m and
in thickness equation

so the thickness of the film will be 200 nm
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