Consider the universal relation r= {a, b, c, d, e, f, g, h, i, j} and the set of functional dependencies f.

f = {{a, b} _{c, d},

{d}=> {e, f, g},

{f, g}_{h},

{a}+{i},

{a, b} {e, g},

{a, i} + {i, j}}

(a) what is the closure of the set {a, d}?

(b) what is the key for r?

(c) what is the minimum cover for the set of functional dependencies f?

(d) decompose r into 2nf.

(e) decompose r into 3nf.

Look at the far left lane in the picture. explain what the red car is doing and what it needs to do to travel safely.

Working on this program in python 3.7: a year in the modern gregorian calendar consists of 365 days. in reality, the earth takes longer to rotate around the sun. to account for the difference in time, every 4 years, a leap year takes place. a leap year is when a year has 366 days: an extra day, february 29th. the requirements for a given year to be a leap year are: 1) the year must be divisible by 42) if the year is a century year (1700, 1800, the year must be evenly divisible by 400some example leap years are 1600, 1712, and 2016.write a program that takes in a year and determines whether that year is a leap year.ex: if the input is 1712, the output is: 1712 is a leap year. ex: if the input is 1913, the output is: 1913 is not a leap year. your program must define and call the function isleapyear(useryear). the function should return true if the input year is a leap year and false otherwise.

Technician a says that a shop towel should never be used to clean around the flange area before replacing an automatic transmission filter. technician b says that a dimpled transmission fluid pan can be repaired. who is right