How to update an database continuously?

Question

The database will need to be updated continuously Ex- if I have a database of ads and the user is posting another ad I want the new ad to be added to the database of ads which I will then display to the user Its a very simple database thing which I think every website must be doing. Ex-amazon

Answer 1

And???

Answer 2

https://stackoverflow.com/questions/3451076/continuously-updating-data-in-application-from-database#3451139