A ____ column is a column that is not part of the primary key.
A. determinant
B. candidate
C. functional
D. nonkey
Answer: D
Computer Science & Information Technology
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What will be output from the following code:
Computer Science & Information Technology
You are given the following tables:
Student(StudId, Name, Addr, Status) Transcript(Id, CrsCode, Semester, Grade)(a) Write a SELECT statement that outputs the names of all students who took CSE305 in the spring of 2000. (b) A naive query execution plan for your answer to (8a) would rst execute the FROM clause, then apply the WHERE condition to the result, and then eliminate unwanted columns using the attributes named in the SELECT clause. Express this plan as a relational algebra expression. (c) We're interested in a more ecient execution plan for this query than your answer to (8b). Such a plan uses a join operation on relations which are as small as possible (some rows of the tables to be joined have been eliminated and the remaining rows have been shortened). Give a relational algebra expression equivalent to your answer to (8b) that can be evaluated more eciently. The amount of credit you get depends on how ecient the expression is.
Computer Science & Information Technology
The ______________________________ process modifies and enhances the default characteristics of a PPP connection.
Fill in the blank(s) with the appropriate word(s).
Computer Science & Information Technology
The ____ attribute determines the horizontal alignment of text.
A. text-center B. text-align C. text-margin D. text-placement
Computer Science & Information Technology