The long-awaited generation of SQL migration scripts is now a part of Vertabelo! You can use these scripts to easily move from one database model version to another. Read this article to learn more. What are SQL Migration Scripts? An SQL migration script is a script that alters an existing database structure: it can add or drop a table, rename columns, or change column types. A migration script can change a given database from one schema version to another – hence its name.