[migration] add rollback when replace_eid_sequence_with_eid_numrange fails If we get here, the current transaction is aborted, so if we are to assume everything is fine and continue we need to rollback first.

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Data model

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==========

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This chapter describes how you define a schema and how to make it evolves as the time goes.

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.. toctree::

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   :maxdepth: 1

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   definition

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   metadata

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   baseschema

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   define-workflows