This document contains three summaries of assignments related to big data analytics: 1) A case study on ACID properties in bank account transactions, focusing on how atomicity ensures transactions are processed in their entirety or not at all. 2) A fill-in-the-blank quiz on concepts in big data analytics, testing knowledge of terms like unstructured data, JSON, data types, and consistency models. 3) Three crossword puzzles related to big data analytics terminology and techniques.