Let's go to the basics... do you have a proper E/R model for the workflow system?
In most cases each Entity in the E/R model would translated into a physical table - most common exception would be a bridge table to break m-m relationships but that's another story.
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Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.