Ideally, you would want a database that contains everything possible. But life is not perfect, especially when you are already stranded on a deserted island. I would take a magic citator service, which provides the subseque nt history of every single primary source of law: not just cases, statutes, or regulations, but all agency decisions, trial court orders, municipal codes, and ethics opinions, etc. The one that is not only a citation index of legal resources but a “citation index” w/2 (legal-rule! or legal-standard!). May my wish come true (citator % “deserted island!”).
Alex Zhang, Micro-Essay, Perspectives: Teaching Legal Research and Writing, Spring 2018, at 39.