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The schema migration document refers to a another document that doesn't exist. This patch removes the reference since no appropriate link could be found. The doc was also updated to include the copyright. This fix also resolves a warning in the tox doc build: /keystone/doc/source/online_schema_migration_examples.rst:23: WARNING: undefined label: online-migration (if the link has no caption the label must precede a section header) Change-Id: I4732651f8c5efd9fa494fd5fba5dad1f782d89a2 Closes-Bug: #1622035
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Online SQL schema migration examples
This document links to several examples implementing online SQL schema migrations to facilitate simultaneously running OpenStack services in different versions with the same DB schema.
- Nova data migration example
- Nova data migration enforcement example of sqlalchemy migrate/deprecated scripts
- Nova flavor migration spec example of data migrations in the object layer
- Cinder online schema upgrades spec example of migrating a column to a many-to-many relation table