You can perform all your design
assignments using .sdc and .qsf setting files. To integrate these files in
compilation and optimization flows, use Tcl scripts.
Even though .sdc and .qsf files are
written in Tcl syntax, they are not executable by themselves.
When you use Quartus® Prime Tcl packages, your scripts can open projects, make the assignments, compile the design, and compare compilation results against known goals and benchmarks. Furthermore, such a script can automate the iterative design process by modifying constraints and recompiling the design.