Question
In a relational schema, which normal form eliminates
transitive dependencies (i.e., non-prime attribute depends on another non-prime attribute)?Solution
Third Normal Form removes transitive dependencies; every non-prime attribute must depend only on a key, not on other non-prime attributes.
Tap A can fill a tank in 20 hours and tap B can emptied it is 25 hours. Tap A starts filling and they opened for 1 hour each alternatively in what time...
Pipe ‘A’ can fill a tank in 25 hours while pipe ‘B’ can empty it in 30 hours. They were operated on alternate hours starting with pipe ‘A’. ...
Three pipes P, Q and R which are used to fill a tank. Each of the three pipes can be used either as an inlet pipe or as an outlet pipe. Each of the pipe...
Pipe A fills a tank in 8 hours, Pipe B fills it in 12 hours, and Pipe C empties it in 24 hours. If all are opened together, how long will it take to fil...
 Pipe A can fill a tank in 12 hours, pipe B in 15 hours, and an outlet pipe C can empty a full tank in 10 hours. All three are opened together. After 3...
Pipe A fills a tank in 12 min, pipe B in 18 min. Time to fill together?
Three pipes A, B and C are connected to a reservoir. Pipe A can fill it in 16 minutes, pipe B in 24 minutes, while pipe C can empty it in 12 minutes. Pi...
Pipe A and pipe B can fill the empty tank in 20 hours and 24 hours, respectively whereas pipe C can empty the full tank ‘x’ hours. Find the value of...
A cistern has two pipes. One can fill it with water in 16 hours and other can empty it in 10 hours. In how many hours will the cistern be emptied if bo...
Time taken by pipe 'A' to fill a tank is 50 minutes. When both pipes 'A' and 'B' are opened together, the tank gets filled in 25 minutes. Find the time ...
