Generic code requirements include connecting building elements from
roof down to footing. That includes metal clips from rafter to stud
wall assembly; ties or plywood to tie top plate, studs, bottom plate, &
joists; straps or bolts to connect wall & floor assemblies to footing.
William suggests some practical applications. The Simpson Strong Tie
web site shows a lot of connectors for various uses. To meet code one
needs to know the required values for wind speed and seismic activity,
then to calculate the connectors are chosen by capacity.

TB