Using division, write a relational algebra expression that produces all students who have taken all courses o?ered in every semester (this implies that they might have taken the same course twice).
What will be an ideal response?
?StudId,CrsCode,Semester(Transcript)/?CrsCode,Semester(Teaching)
Computer Science & Information Technology
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Indicate whether the statement is true or false
Computer Science & Information Technology
A Web ____ is any data file that can be identified, such as an HTML document, a graphic, a video, or a sound file.
A. browsable object B. tag C. URL D. resource
Computer Science & Information Technology