Suppose that we decompose the schema R(A, B,C, D,E) into (A, B,C) and (A, D,E). Show that this decomposition is a lossless‐join decomposition if the following set F of functional dependencies holds: F = {A→BC, CD→E, B→D, E→A}.

Respond to the following in three to five sentences. select the workplace skill, habit, or attitude described in this chapter that you believe is most important for being a successful employee.

Kenny works with an it company. his company is about to launch new software in the market. he has to ensure that this new software is functional and meets all of the quality standards set up at the planning stage. which job profile is kenny likely to have? kenny is likely to have the job profile of a blank .

Verify each identity[tex] \frac{csc}{cot \: x \: + \: tan \: x} = cos \: x[/tex]