Engineering
Engineering, 21.04.2020 15:28, hbked23

Suppose we have a database for an investment firm, consisting of the following attributes: B (broker), O (office of a broker), I (investor), S (stock), Q (quantity of stock owned by an investor), and D (dividend paid by a stock), with the following functional dependencies: SD, I B. IS a Find a key for the relation scheme R(B, O,S, Q,I, D). b. Find a decomposition of R into third normal form, having a lossless join and preserving dependencies c. Find a lossless join decomposition of R into Boyce-Codd normal form.

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Suppose we have a database for an investment firm, consisting of the following attributes: B (broker...

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