Advanced Data Generator is a powerful test data generation tool by Upscene Productions that supports multiple database types, including SQL Server, Oracle, and MySQL. It offers a user-friendly interface and a wide range of data generation features, allowing users to create realistic test data based on their database schema. The tool supports various data types, customizable data generation rules, and built-in functions for data masking and validation. It also provides features for generating data that adheres to foreign key constraints and maintaining data integrity in test environments.