$4.$ Write an SQL query for each of the following:

a$.$ Fetch unique values of DEPARTMENT from the Worker table.

b$.$ Print all Worker details from the Worker table order by FIRST$\_$NAME Ascending and DEPARTMENT Descending.

c$.$ Show the country name and its area with an area between $200,000$ and $250,000$ from World table.

d$.$ Select the columns title, rating, and year$\_$released from the table Movies showing only movies that were released before $2001$ and had a rating above $9.$

e$.$ Show the language and number of movies per each language from table Movies.

f$.$ Show the year released, the language and count of movies sorted by the release date in ascending order from table Movies.

g$.$ Show the languages and the average movie budget by language category showing only the languages with an average budget above $$50$ million from table Movies.