Section: Expressions
Answers to section modules.

Question: Which expression below will calculate the area of every feature? Use experimentation in the field calculator to verify your answer
Answer: $area


Question: Figure out which of these expression(s) you would use to change the outline colour of a symbol from the places when max_pop is larger then 5 million people. Experiment in the symbol properties panel
Answer: CASE WHEN pop_max > 5000000 THEN color_rgb(255,0,0) ELSE color_rgb(0,0,0) END
Answer: IF(pop_max > 5000000, color_rgb(255,0,0), color_rgb(0,0,0))


Question: What is the best way to describe geometry functions
Answer: Group of functions which are intended to exclusively operate on the geometry of layers


Question: Which of the following can not be achieved using an expression


Question: Can a user update selected records
Answer: True