So, Drupal's great for visualizing nodes — you create a View, grok your data and boom, you're done. But what if you have a massive data source that would create a thousand — ten thousand, a hundred thousand, a million! — nodes if you imported it as-is?
I've used Data API previously and it's really cool — you tell it to pay attention to a random table and it creates a View of it and you can do a lot of different things. Similarly, Sheetnode allows the creation of Google Spreadsheet-like tabular datasets, which can then be fed into Views or whatever.
What other options exist? Would this be a good candidate for one of the NoSQL modules? Which are best for performance? What have you used personally?