What are the sources of business rules, and what is the database designer's role with regard to business rules?

Emily sold the following investments during the year: stock date purchased date sold sales price cost basis a. 1,000 shares dot com co. 03-21-2007 02-04-2018 $20,000 $5,000 b. 500 shares big box store 05-19-2017 01-22-2018 $8,200 $7,500 c. 300 shares lotta fun, inc. 10-02-2017 09-21-2018 $3,000 $4,500 d. 700 shares local gas co. 06-17-2017 11-11-2018 $14,000 $17,000 for each stock, calculate the amount and the nature of the gain or loss.

Yael decides that she no longer enjoys her job, and she quits to open a gluten-free, dairy-free kosher bakery. she pays a monthly rent for her store of $2,000. her labor costs for one month are $4,500, and she spends $6,000 a month on nut flours, sugar, and other supplies. yael was earning $2,500 a month working as a bank teller. these are her only costs. her monthly revenue is $14,000. which of the following statements about yael’s costs and profit are correct? correct answer(s) an accountant would say she is earning a monthly profit of $1,500. her implicit costs are $2,500 a month. an economist would tell her that she is experiencing a loss. her total costs are $12,500 a month. her explicit costs include the labor, rent, and supplies for her store. her economic profit is $1,500 a month.

Companies hd and ld are both profitable, and they have the same total assets (ta), total invested capital, sales (s), return on assets (roa), and profit margin (pm). both firms finance using only debt and common equity. however, company hd has the higher total debt to total capital ratio. which of the following statements is correct? a) company hd has a higher assets turnover than company ld. b) company hd has a higher return on equity than company ld. c) none of the other statements are correct because the information provided on the question is not enough. d) company hd has lower total assets turnover than company ld. e) company hd has a lower operating income (ebit) than company ld