Google Chrome is Automatically restoring history

I am trying to delete Chrome history from c# code with sqlite by using query

1)delete from urls.

2)delete from visits.

which are in history file present in AppData\Local\Google\Chrome\User Data\Default and query are executing without any problem.

But does not reflect any change when I open the browser and go to history tab.

I have also tried by deleting the History file but history is getting restored in chrome automatically and the previous history is available.

In Which file chrome store its history and from where its getting the deleted history.

If i delete the whole Default folder(AppData\Local\Google\Chrome\User Data\Default) then i am able to delete history.