Consider the relation r(a, b,c, d) with fds ab -> c, c-> d, d-> a. what is the 3nf status of r? 1. ris in 3nf. 2. ris not in 3nf. it must be deconstructed into r1(a, b,c) with ab-> c and r2(a, b,d) with d-> a. s. r is not in 3nf. it must be deconstructed into r1(a, b,c) with ab-> c, r2(a, b,d) with d-> a and r3(a, b,d) 4. ris not in 3nf but there is no unique deconstruction.

Which of these is a benefit of social networking? oa. hiding your true identity from friendsob. avoiding talking to people in personoc. spending time with friends instead of studyingod. connecting with new people

Create a pseudocode design to prompt a student for their student id and the titles of the three classes they want to add. the solution should display the student’s id and a total bill. • bill a student using the following rules: o students can only add up to 3 classes at a time.

What are ways to switch windows in excel? check all that apply. on the status bar, click the windows button, and then click the file name. on the task bar, click to display the excel jump list, and then click the file name. on the view tab, in the window group, click switch windows, and then click the file name. on the review tab, in the viewing group, click files, and then click the file name.