Does one always use dsp to create a SIMPLE oscillator?

Newb here, just discovered JUCE, also new to c++. Trying to get a good understanding of the framework and not only blindly follow the tutorials. What is the most vanilla approach to generating oscillators? Not too complex of course, but would one 'always' use dsp module? Trying first to understand oscillators, but I know wavetable is an alternative, more efficient approach.