The combination of columns, EventPlanLine. PlanNo and EventPlanLine. LineNo, is the primary key but not: a. a candidate key.
b. a candidate key but not the primary key.
c. a superkey.
d. the primary key and also a candidate key.

In which phase does software coding and testing happen in the spiral model? the spiral model does not have a separate testing phase. both, software coding and testing occurs during the phase.

How can you tell if someone sent you a text message to your email instead of a email

Leo is a recruitment executive for a large company. he has identified new labor resource requirements in both the marketing and production departments. what should be his first step in recruiting candidates for the positions? a. conduct background checks of candidates b. make job offers c. arrange interviews d. conduct reference checks e. place job ads on job sites