A basic questions on creating markers - using google search vs. my custom database

[Sandeep]

Hi,

I have a very basic question as I am going through the implementation of Google Maps API in my portal application. Essentially, within my application I want to display my businesses/companies as markers. Now many of these businesses are found when I do google search - so my question is should I some how import that data from google query or should I add longitude/latitude to my business/company table and add those markers within my application? 

- Also how do I keep search results in-sync with the markers on the map?

Please advise.

Thanks,

Sandeep