[ 源代码： alembic ]
软件包：python3-alembic（1.16.4-1）
试制（Experimental）软件包
警告：这个软件包来自于 experimental 发行版。这表示它很有可能表现出不稳定或者出现 bug ，甚至是导致资料损失。请务必在使用之前查阅 changelog 以及其他潜在的文档。
lightweight database migration tool for SQLAlchemy - Python module
Alembic is a new database migration tool, written by the author of SQLAlchemy. A migration 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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