Q$3.(20$ points$)$ Package, function returns a record type and function overloading. This question requires to use table Employees and Departments.

In this question, you are required to create a package specification and its body. The package name is called Pkg$\_$Dept$\_$Info,

In the package specification part, you will define a user$-$defined RECORD type, called Dept$\_$Rec, which has these fields:The first two fields are correspondent to the department id$,$ department name in the departments table. The Mgr$\_$name is the full name $($first name, space, last name$)$ of the department manager.

In the package, an overloading function named Get$\_$Dept$\_$Info should be declared. One of the function will accept the department ID$,$ another accepts the department name as its IN parameter; both return a Dept$\_$Rec record type just defined in the same package.

After having successfully compiled the package $($specification and body$),$ please write a PL$/$SQL block, the program will define two cursors, the first one to list those department ID that their location$\_$id are not in $1700,$ the second cursor lists those department names that have a department manager assigned. Your program will invoke this function Get$\_$Dept$\_$Info two times, first time using its department ID$,$ second time with the department name. Print out the related info you get from the invoking: the department id$,$ department name, the full name of its manager.