Copy code for the SQL part to get the data frame like we did in class. Put the focus on your code in R to do steps $3-5$

$1)$Select $*$ from world.city table and read into a data frame

$2)$For each country code, output the number of cities

$3)$Filter the data frame to contain only records where population is greater than $200,000$

$4)$Output a histogram of the population

$5)$Output a boxplot of the population

write the code using r programming.