为了允许我们改变游戏，但不必反复地迁移数据库到新的模式，我们开发了一个数据库转换工具。
To allow us to change the game without continuously having to migrate databases to new schemas, we developed a database transformation tool.
传统异构数据库间的数据转换工具存在受平台限制、容易产生冗余等不足。
Traditional data transformation tools are constrained by the platform and easily lead to data redundancy.
以XML为公共模型，通过关系数据库与XML的可逆双向转换，建立异构关系数据源的统一转换工具。
With XML as the common model, the uniform conversion instrument of isomerous database is set up through the reversible bidirectional conversion between relational database and XML.
以XML为公共模型，通过关系数据库与XML的可逆双向转换，建立异构关系数据源的统一转换工具。
With XML as the common model, the uniform conversion instrument of isomerous database is set up through the reversible bidirectional conversion between relational database and XML.
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