R(a, b) currently contains the four tuples (0,4), (1,5), (2,4), and (3,5). s(c, d) currently contains the four tuples (2,10), (3,11), (4,12), and (5,13). as a result, certain insertions and deletions on s are illegal, as are certain updates or insertions on r. you should develop simple tests for illegal operations of these four kinds. then, show your understanding by indicating which of the following modifications will not be rejected because of a constraint violation.

a) inserting (5,0) into r.
b) inserting (1,4) into r.
c) updating (2,4) in r to be (2,2).
d) updating (3,5) in r to be (3,1).

Requirement types discussed during software development include functional and color scheme nonfunctional and code style constraint and nonfunctional fashionable and functional.

Awide variety of “ apps “ are available to customize devices. which category of app does the word processing software fall into?

Write the command that can be used to answer the following questions. (hint: try each out on the system to check your results.) a. find all files on the system that have the word test" as part of their filename. b. search the path variable for the pathname to the awk command. c. find all files in the /usr directory and subdirectories that are larger than 50 kilobytes in size. d. find all files in the /usr directory and subdirectories that are less than 70 kilobytes in size. e. find all files in the / directory and subdirectories that are symbolic links. f. find all files in the /var directory and subdirectories that were accessed less than 60 minutes ago. g. find all files in the /var directory and subdirectories that were accessed less than six days ago. h. find all files in the /home directory and subdirectories that are empty. i. find all files in the /etc directory and subdirectories that are owned by the group bin."