If you bought a new aquarium and cabinet, the cabinet does not need to be attached to anything and is normally free standing.
Second hand cabinets should be checked for structural weakness and damage, and repaired or reinforced as required.
------------------
The main concern with big tanks is the floor. If you have a concrete floor it's fine. However, if you have a wooden floor, then be careful where you put the tank.
A 230 litre tank will weigh about 300kg when it is full and set up, that includes the weight of the tank, stand, lights and everything in it.