File types

CSVs (flat data), JSON (tree-like data/hierarchical), SQLite databases (of multiple tables in tabular format), BigQuery ("big data" SQL)

Datasets (from kaggle and other sources)

• Coronavirus dataset
• Trump tweets
• Medical Appointment No Shows
• IRIS data (small)
• Groceries Market Basket Dataset (small)
• New York City Airbnb Open Data
• Cervical Cancer Risk
• Wine reviews (large)
• Credit Card Fraud Detection (large)
• Stock Market Data (huge)
• Bitcoin Cash Blockchain
• HIPAA Data Breaches (on Kaggle)) (paper)