De or het restauranttafel?

The correct Dutch article is:

de restauranttafel

How to use restauranttafel

the restauranttafelde restauranttafel
this restauranttafeldeze restauranttafel
that restauranttafeldie restauranttafel
our restauranttafelonze restauranttafel
your restauranttafeljouw restauranttafel
every restauranttafelelke restauranttafel
which restauranttafel?welke restauranttafel?
a big restauranttafel / the big restauranttafeleen grote restauranttafel, de grote restauranttafel