Give a set of functional dependencies for the relational schema R(A, B, C, D) with primary key AB under which R is in 2NF but not in 3NF.
What will be an ideal response?
Any (non-trivial) dependency X ? ?, with X not a proper subset of {A, B} and ? not
equal to A or B will violate 3NF but not 2NF.
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Why was MIME invented?
What will be an ideal response?
What output would you expect after typing the following:
$ prog1 $ e2=20; export e2 $ e4=40 prog1 Here are two programs called prog1 and prog2: $ cat prog1 e1=100 export e1 e2=200 e3=300 prog2 $ cat prog2 echo e1=$e1 e2=$e2 e3=$e3 e4=$e4 $
Which useful action(s) can the dd command perform?
A) Copy a drive to another drive B. Zero out a partition C. Convert file contents D. All of the above
Case 2Tayler is revising a Web site that was created by someone else. She has encountered a class-based style rule named .highlight and has questions concerning the purpose of the rule.What does the period in front of the word "highlight" mean?
A. It is an attribute. B. It is a class-based rule. C. It will repeat. D. It is static and will not repeat.