Taxonomy of XML Schema changes.
XML模式变化的分类。
What types of schema changes are allowed!
允许什么类型的模式变化？
Managing database schema changes can be tedious.
管理数据库模式的更改是件乏味的事情。
Migrations can handle many different kinds of schema changes.
迁移可以处理许多不同类型的模式变化。
In Rails applications, schema changes occur through migrations.
在Rails应用程序中，模式的更改是通过迁移发生的。
If the schema changes, you can just regenerate the dsClients class.
如果该模式发生更改，则可以重新生成dsclients类。
Caveat 1: if the database schema changes, the statement will need to be re-prepared.
注意1：如果数据库模式变化，声明需要必须重新准备语句。
Coordinating both data and schema changes is another paradigm shift, and an effective one.
协调数据和模式变化是另一个理念的变化，而且是个有效的变化。
A similar approach can be taken for columns being renamed and other database schema changes.
可以对正被更名的列和其他数据库架构更改采用类似的方法。
In this section, we'll introduce different types of schema changes with respect to validation.
这一节介绍和验证有关的不同的模式变动类型。
If you intend to use the sample programs, modify these definitions to match your schema changes.
如果打算使用示例程序，那么需要修改这些定义，以匹配您的模式修改。
To process the XML messages without re-structuring and re-mapping in the face of XML schema changes.
在XML模式发生更改时，无需重新构建和重新映射即可处理XML消息。
Again, this group can have no members on a daily basis, as schema changes are rare and typically very controlled.
同样，鉴于计划很少需要变更并且很受限制，日常情况下该组可以没有任何成员。
You need to also make sure that the control files are backed up once there are schema changes to the database.
同时，还需要确保只要对数据库的模式进行了更改，就要对控制文件进行备份。
In "taxonomy of XML schema changes," we present the taxonomy of changes that may happen during XML schema evolution.
“XML模式变化分类”一节提出了模式演化过程中可能出现的变化类型。
Migrations combine power and simplicity to coordinate both schema changes and data changes using a wrapping approach.
迁移用包装的方式组合了协调模式变化和数据变化的威力和简单性。
In short, traditional mapping strategies ignore the cars in the road: reversing bad schema changes and handling data.
简而言之，传统的映射策略忽略公路上的汽车：回退坏的模式变化并处理数据。
If you do not update the data generation plan based on the schema changes, you cannot continue to modify the plan.
如果未根据架构更改来更新数据生成计划，则不能继续修改该计划。
Specifies the path of a script that must run in the destination database in order to deploy schema changes or data.
指定必须在目的资料库中执行之指令码的路径，以部署结构描述变更或资料。
This approach allows customization of an existing schema and Web service via code changes rather than schema changes.
该方法允许通过更改代码而不是更改模式来对现有模式和Web服务进行自定义。
Development teams usually handle schema changes by generating a new version of a schema from scratch, with SQL scripts.
开发团队处理模式变化时，通常会用sql脚本从头开始生成一个新版模式。
Click on the add button to add the schema CHANGES to the list of objects to compare and migrate, and then click on Next.
单击add按钮，将模式CHANGES添加到对象清单进行比较和移植，然后单击Next。
To support online schema changes (SQL alter operations) to a table that is undergoing replication, use master replicates.
为了支持对一个正在被复制的表的在线模式更改（SQLalter操作），可以使用主复制。
Now that all necessary schema changes were implemented through migrations, we can upload the XML data into the XML_CONTENTS table.
既然已经通过迁移实现了所有必需的模式修改，就可以将XML数据上载到xml_contents表中。
You have a strategy for dealing with changes in your schema, and you can back out either of the two major schema changes you've made so far.
有了处理模式中的变化的策略，也可以收回目前为止两个主要模式变化中的任何一个。
After modifying the schema, we need upgrade each user databases associated with the schema by applying the schema changes. The steps are.
在编辑方案之后，我们需要应用方案变更，来更新每一个与方案相关的用户数据库。
When a physical information source schema changes, the algorithms adjust mappings automatically and affect the fewest number of mappings.
当物理信息资源模式变更时，映射调整算法自动调整映射并且调整的映射数是最少的。
By utilizing Rails migration and defining your database schema changes in Ruby files, versioning of changes takes place in a logical manner.
通过利用Rails迁移和在Ruby文件中定义数据库模式更改，可以以逻辑的方式对更改进行版本控制。
But very few teams bother to create scripts that undo schema changes, and fewer still manage to create automated scripts to deal with changes in data.
但是很少有团队会费力气创建能取消模式变化的脚本，而且成功地创建了处理数据变化的自动脚本的团队更少。
This is not a big deal because when you use an untyped DataSet you would still likely have to change some client code if the underlying schema changes.
这并不要紧，因为使用非类型化数据集时，如果基础架构发生改变，您仍然可能必须更改一些客户端代码。
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