统一后端（ube）是优化bpm系统使用的库的集合。
ube的Python项目详细描述
统一后端（unified back end，ube）是python 3应用程序开发的可交付后端。
UBE has a tree-oriented EAV database structure and XML-based database updater functionality to
create and update that structure and others on Postgres, MySQL, DB2, Oracle and MS SQL Server.
Many components, like the updater, can be used separately.
The API aims to support CRUD, credentials/rights/permissions and auditing.
Also it uses AOP extensively and therefore provides some usable decorators.
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