What Are the Most Effective Data Quality Metrics to Measure Accuracy and Consistency?

Wow, thanks so much for all the replies, everyone! This is super helpful. I’ve been looking into Talend and Great Expectations based on your suggestions, and they seem like exactly what I need.

Quick follow-up though—how do you guys handle scaling these tools for larger datasets? Like, do they still perform well when you’re dealing with millions of rows?

Also, has anyone tried combining multiple tools? Like using one for accuracy checks and another for consistency? Just curious if that’s overkill or actually useful.

Thanks again—you’ve all made this way less overwhelming! Cheers!