Consider the following relations:
emp(e_id: integer, e_name: string, age: integer, salary: real)
works(e_id: integer, dep_id: integer, affectation: date)
dept(dep_id: integer, dep_name: string, budget: real, manager_id: integer)
what referential integrity constraints exist between these relations?
what are the options for enforcing these constraints when a user attempts to delete a dept tuple?

Which of these is most responsible for differences between the twentieth century to the twenty-first century?

Freya realizes she does not have enough in her bank account to use the debit card. she decides to use a credit card instead. which questions should freya answer before using a credit card? check all that apply. can i pay at least the minimum payment each month? can i make payments on time and avoid late fees? will i have to take out a loan? how much in finance charges can i afford to pay? should i talk to a consumer credit counseling service?

Draw the resistor’s voltage and current phasors at t=15ms. draw the vectors with their tails at the origin. the orientation of your vectors will be graded. the exact length of your vectors will not be graded.