how to store a MAP location in database ?

What have you tried?

In what format do you get the data? Why not store it as you get it? It is usually long unreadable string of numbers. So just store it like that, even if you don't know how to read it, the map applications usually do.

Is your question how to store data in a data base, or is it how to get the Longitude and Latitude from a MAP? I ask this because, storing the information in a database is just like any other data, as @Mehdi stated. If you are wondering what data type to use for it, I would suggest you just store is as a string. Then manipulate or covert as needed. Hope this helps you.