This code-generation technique also serves another purpose: schema migration.
这种代码生成技术还有另一个用途：模式迁移。
Of course, more complex changes would still require a schema migration tool of some sort.
当然，比较复杂的更改仍然需要一些模式迁移工具。
It also has a nice feature called automatic schema migration, which automatically modifies a database table based on differences JBoss finds with a newly deployed application.
它还有一个很棒的功能，称为自动模式迁移，该功能根据JBoss用新部署的应用程序所发现的差别自动修改数据库表。
This illustrates the BPC database schema or runtime data migration.
这演示了BPC数据库模式或运行时数据迁移。
This illustrates the BPC database schema and runtime data migration.
这演示了BPC数据库模式或运行时数据迁移。
You can then generate a migration and copy the schema you dumped into a migration.
然后可以生成迁移，并把导出的模式拷贝进迁移。
The DAD to annotated XML schema generator tool will help users in migration by converting the DAD to an equivalent annotated XML schema, thus making the task of migration much easier.
DAD到带注释的XML模式生成工具通过将DAD转换成一个等价的带注释的XML模式，使得迁移任务容易得多，来帮助用户进行迁移。
You've taken a deep dive into a single migration but still haven't created a single change in the schema.
现在已经深入研究了单一迁移，但是还没有在模式中进行变化。
Now, let's look at how Rails migration can facilitate the database schema evolution.
现在，让我们看看Rails迁移如何为数据库模式变更提供帮助。
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。
The Rails migration feature helps application developers manage this schema evolution, making it easy to synchronize changes between the application code and the database objects.
Rails迁移特性可以帮助应用程序开发人员管理这种模式演变，便于在应用程序代码与数据库对象之间同步更改。
Rails migration does the job of the majority of the database administrative tasks associated with schema evolution.
通过Rails迁移完成模式变更这一主要的数据库管理任务。
Each change in the database schema has its own migration object, encapsulating a move up and a move down. Listing 1 shows an empty migration.
数据库模式中的每个变化都有自己的迁移对象，迁移对象包装了前进和后退。
Intended use cases: Connecting to and browsing Derby or DB2 databases, creating schema objects, running and creating SQL scripts, loading and unloading tables, and Derby to DB2 migration.
适合的场景：连接和浏览derby或DB 2数据库，创建模式对象，运行和创建sql脚本，装载和卸载表，以及从derby到db2的迁移。
Contact the Rational ClearQuest test manager administrator for the project that requires migration and get the ClearQuest schema used for that project.
联系需要迁移的项目的RationalClearQuestTestManager管理员，并得到该项目所用的Rational ClearQuestschema。
Migration of mapping document: Users need to migrate their DAD to annotated XML schema in order to use the new functions.
映射文档的迁移：用户需要将他们的dad迁移到带注释的XML模式，以便使用新的功能。
Each migration file starts with a sequence number one greater than the previous migration file, and that number corresponds to the schema version kept in a special table in the database.
每个移植文件开始的序列数都比前面的移植文件大，并且该数字符合位于数据库特殊表中的方案版本。
The migration tool uses XSL files to get the XML configuration files of the target version by applying schema changes on those of the source version.
迁移工具使用XSL文件，通过应用目标版本的模式更改来取得目标版本的XML配置文件。
Following are the primary migration considerations when migrating from XML Extender decomposition to annotated XML schema decomposition.
以下是从XMLExtender分解迁移到带注释的XML模式分解时要考虑的主要因素。
You will need to exclude the current migration files from the project and create a new migration based on updating an empty or initial database schema.
你需要排除当前迁移文件从项目和创建一个新的迁移基于更新空或初始数据库模式。
This application may be used for database migration, code generation from database schema etc.
这个应用程序也许用来迁移数据库或者根据数据库模式来生成代码，等等。
This application may be used for database migration, code generation from database schema etc.
这个应用程序也许用来迁移数据库或者根据数据库模式来生成代码，等等。
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