Write an OQL query that, for each major, computes the number of students who have that major. Use the Student class de?ned in (14.14)
What will be an ideal response?
SELECT Major: M, count: count(S2.Id)
FROM StudentExt S, StudentExt S2, S.Major M
WHERE M IN S2.Major
GROUP BY M
We could also write this query using nested queries as follows:
SELECT DISTINCT Major: M,
count: count(SELECT S2.Id
FROM StudentExt S2
WHERE M IN S2.Major)
FROM StudentExt S, S.Major M
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A relational database has the ability to create relationships between two:
A) files. B) tables. C) fields. D) forms.
Dwight has a computer game, StarGazer, which he plays at work. StarGazer has a secret feature—it pops up an image of a spreadsheet on the screen any time he hits Shift-T on his keyboard, so that it looks like the user is actually working. Dwight uses this feature any time his boss walks by while he is playing StarGazer. What is this "feature" of StarGazer called?
What will be an ideal response?
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a. Sarbanes-Oxley b. HIPAA c. PCI DDS d. Orange Book