The article discusses how databases change over time to meet new needs, and how two methods, schema evolution and schema versioning, help manage these changes without losing data or breaking old applications. Schema evolution updates the current schema and adapts the data to fit it, while schema versioning creates new versions of the schema each time changes are made, preserving old versions and their data. This allows access to data through any schema version, preventing old applications from becoming outdated. The main focus is on recent research and advancements in schema versioning support in popular databases.