Note: Different mapping schemas are used for shredding the XML data to the relational tables in order to cover more usage possibilities.
注意：为了应对更多的情况，可以使用不同的映射模式将XML数据分解为关系表。
Once all the mapping information has been created and setup, the next step is to populate the tables with data.
创建并设置所有映射信息之后，下一步是用数据填充表。
"Shredding" or decomposing the XML data into pieces and mapping these pieces to various columns of tables within a relational DBMS.
把XML数据分解为小片段并把它们映射到关系DBMS中的表列。
XML data for customer information is shredded to the customer and phone tables using an RDB formatted DAD (RDB node mapping enables decomposition of the XML).
顾客信息的XML数据使用一个rdb格式的DAD (rdb节点映射允许分解XML)分解到customer和phone表。
However, if there was a previous top-down mapping against a different supported database, then any tables and data source created will be in that database.
然而，如果这里存在一个针对于受支持的不同数据库以前的一个自上而下的映射，这时创建的表和数据源都将在这个数据库中。
There are also instances when a given bean class with all the required relational mapping meta-data exists, but the underlying physical tables to which it is mapped are missing.
有时候，已经存在一个bean类，其中包含所有需要的关系映射元数据，但是这个类所映射的底层物理表却丢失了。
There are also instances when a given bean class with all the required relational mapping meta-data exists, but the underlying physical tables to which it is mapped are missing.
有时候，已经存在一个bean类，其中包含所有需要的关系映射元数据，但是这个类所映射的底层物理表却丢失了。
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