Gexercise 19.7 suppose you are given a rebltion r \vith four attributes ab()d. f'or each of the following sets of fds, assurning those are the only dependencies that hold for r, do the following: (a) identify the candidate key(s) for r. (b) identify the best honnal forbl thatr satisfies (lnf, 2nf, : jnf, or benf). (c) if ii is not in bcnl~\ decolnpose it into a set of bcnf relations that preserve the dependencies. 1. c: - d, + a. 13 c 2. fj '-~-f c'. d --> a : 3. abc -~f d, d --> a 4. a -+ b. b(} ,. d. a ~. c 5. a13 c, ab···_··.• d. c -+ a, d·_·-+ 13

Mary's manager told her she should insert a graphic into her documentwrite mary a brief note describing how to insert a graphicin a word processing document.

You are working with a professional edition organization. they wish to install the expense tracker which requires the use of 4 custom tabs, 3 custom objects, and one custom app. if the company is already using 4 applications, 36 custom objects, and 7 custom tabs, what will happen when they try to install expense tracker?

[a] create a class called “cycle” which has two instance integer variables as properties, “numberofwheels” and “weight.” create a constructor with two parameters, using the same variable names in the parameter list. assign each variable to numberofwheels” and “weight” respectively. write a separate application to test the class and display its properties. note: do not change the names of the instance variables or the variables listed in the constructor’s parameter list. [b] edit your class cycle by adding a default constructor which will assign the default values of 100 to represent the numberofwheels, and 1000 to represent the weight, by invoking a call to the other constructor. modify your application created in [a] to test the class.