For my online 3D earth model on guadTree algorithm I need elevation data for all land and oceans.
I recently discovered SRTM 1 Arc-Second Global, but it does not have data for the oceans and the most northern and southern latitudes. I studied the article, but I still can not decide. What data are better?
And where better to store this data? In MySQL? If I need to get the elevation of a particular point by lat/long in order to generate an arbitrary terrain pieces.