what does creatig map with make in golang do code example

Example: create map golang

//map in go is a built in type implementaiton of has table
//create a empty map
myMap := make(map[string]string)
//insert key-value pair in map
myMap["key"] = "value"
//read from map
value, ok := myMap["key"]
//delete from map
delete(myMap, "key")