This document discusses different database options for storing and persisting data in Pharo. It explains that everything that can store data can be considered a database, and databases allow data to be persisted, shared, and accessed concurrently when it does not fit in memory. It then summarizes several Pharo-specific database options like using snapshots, Fuel, PUnQlite, and Voyage/Mongo, as well as mentioning other options like Phriak, Voyage2, SQLite, and SandstoneDB. It also briefly mentions using a relational database management system.