May 26, 2018

Database migration tool for SQLAlchemy

Alembic is a new database migrations tool, written by the author of SQLAlchemy. A migrations tool offers the following functionality

  • Can emit ALTER statements to a database in order to change the structure of tables and other constructs
  • Provides a system whereby “migration scripts” may be constructed; each script indicates a particular series of steps that can “upgrade” a target database to a new version, and optionally a series of steps that can “downgrade” similarly, doing the same steps in reverse.
  • Allows the scripts to execute in some sequential manner.

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