Can you provide a bit more context about the use case you're solving for? Quickbase is a relational database at its core, so you'll generally follow the same architecture guidelines. If you're concerned about how many fields a single table can handle or how many tables an app can handle, the answer is a lot. I regularly see tables with 1k or more fields and apps with at or near 100 tables (though I'm sure there are plenty of customers with more than that).
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Blake Harrison
bharrison@datablender.io
DataBlender - Quickbase Solution Provider
Atlanta GA
404.800.1702 /
http://datablender.io/------------------------------