在将数据库移到另一个系统之前，始终应该重新评估它的调优参数和物理组织，即便这些系统是同一种平台也应如此。
Always re-evaluate tuning parameters and physical organization of the database before moving it to a different system, even when the systems are on the same kind of platform.
这些建议涉及了数据库模式、XML与关系存储之间的选择、索引的定义以及带有分区和集群选项的物理数据组织。
These recommendations address the database schema, the choice between XML and relational storage, definition of indexes, and physical data organization with partitioning and clustering options.
设计新数据库的物理布局应当从设计表空间的组织开始，步骤如下。
Start designing the physical layout of a new database by designing the table space organization, as shown in the following steps.
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