Program - Map with objects and links?

Question

Knowledge base

Please tell me a program or a way to implement the following task.
There is a database (created or filled in manually) with the fields Object name, City, Relations (it is indicated with which of the objects it is connected) ... It is necessary to display these objects on the map with reference to the city, when you click on the object, communication lines with other objects are drawn ( lines on the map to other objects, connections are taken from the database) and all information on the object is displayed.