Stream ____________ are formed from stream sources, intermediate operations and termi- nal operations.

Which of the following do advanced data types NOT allow for?

A) More efficient data entry. B) Values cannot come from a table, query, or a value list. C) It constrains what can be entered into a field, ensuring that typographical mistakes are avoided. D) By avoiding data entry mistakes, your query results will be accurate.

Savadone University, a small, private university specializing in graduate programs, needs to keep track of the list of students who (a) apply, (b) are accepted, and (c) actually enroll in the university. For security purposes the university also must send a report to the government with a list of foreign students who enroll but fail to register.

Suggest a kind of code for this purpose, and give an example of its use in the university that demonstrates its appropriateness. What are its advantages?