解决了只注意数据结构的无损转换，而忽略数据约束的保存问题。
It considered not only lossless transformation of database structure, but also data constraint storage.
各种静态数据约束下的三维储层模型是指可以同时满足地震和测井数据的模型。
The models constrained by many kinds of static data are representative as the models constrained by seismic data and well log data.
如果用户输入的数据违反了任何数据约束，支持X Forms的浏览器会立即给用户以反馈。
If the user enters data that violates any of the data constraints, the XForms-enabled browser can immediately provide feedback to the user.
用户数据约束(user data constraint)满足了受限的请求应该经由受防护的传输层链接进行传输的需求。
A user data constraint establishes a requirement that the constrained requests be received over a protected transport layer connection.
在XForms模型中，xfg生成xforms绑定属性形式的数据约束，它与数据库元数据相对应，比如列类型、长度、是否是必需的，等等。
In the XForms model, XFG generated data constraints as XForms bind attributes which correspond to database metadata, such as column type, length, required, and so on.
这种数据结构约束的弱化要求根据需要强化应用程序逻辑中的约束。
This weakening of the data structure constraint requires the strengthening of constraints within the application logic as necessary.
对象没有固有的约束，因此要实现数据验证，必须进行显式编码。
Objects have no inherent constraints, so explicit coding is required to implement the data validation.
这些参数构成了这个问题的数据矩阵，并用来计算约束，正如我们稍后会看到的一样。
These parameters make up the problem's data matrix and are used to calculate the constraints, as you'll see later.
此组件用于显示受某个因素约束的数据元素子集。
Constrained list. This component displays a subset of data elements constrained by some factor.
这个表使用引用完整性约束确保数据的有效性。
This table USES referential integrity constraints to ensure data validity.
这可以采用添加列、更改列的数据类型、添加约束或者甚至删除列的方式来实现。
This can take the form of adding a column, changing the data type for a column, adding a constraint, or even deleting a column.
而每个领域都有自己的一套约束数据的规则和规范。
And each domain has its own set of rules and regulations that put constraints on data.
如果远程表在数据上有检查约束，那么可以使用信息检查约束将这些约束传递到联邦服务器。
If the remote tables have restrictions on the data such as check constraints, you can convey these restrictions to the federated server using informational check constraints.
这些限制在极大程度上是因为数据结构的复杂约束。
Most of these limits are subtle constraints based on data structures.
尽管我们不会重用实际的约束实现，但是元数据api提供一些方法来提取约束定义并重用它。
While we do not reuse the actual constraint implementation, the metadata API offers some ways to extract the constraint definition and reuse it.
当描述混合内容时，根本无法约束字符数据。
When describing mixed content, the character data cannot be constrained in any way.
这些约束规定了数据的范围。
有许多其它约束实例数据的方法；请参阅 附录E以获得完整列表。
There are many other ways of constraining the instance data; see Appendix E for the full list.
处理器在提交数据进行处理之前检查数据类型和约束。
The processor checks data types and constraints before the data is submitted for processing.
物理数据建模应用物理约束，如空间、性能以及数据的物理分布。
The physical data modeling applies physical constraints, such as space, performance, and the physical distribution of data.
应用程序将这些约束应用于数据时，约束也就成了验证。
When an application applies those constraints on data, the constraints become validations.
在这个示例中，XFormsinstance函数指出命名的实例中的所有数据都受到约束。
In the example, the XForms instance function indicates that all data in the named instance is constrained.
应用数据联合模式时的约束。
XForms处理器根据实例数据的约束逐个字段地对其进行检查。
On a field-by-field basis, the XForms processor checks the instance data against its constraints.
能够使用以下面向对象的查询语言对数据进行查询：对象约束语言(Object Constraint Language,OCL)。
Ability to query the data using an object-oriented query language: object Constraint language (OCL).
它需要一种完全不同的方法，一个需要我们放松(lose)对数据的约束，而将其视为能被形象化为一个整体的东西。
It calls for an entirely different approach, one that requires us to lose the tether of data as something that can be visualized in its totality.
Schematron文档基本上是一组应用于XML数据的约束。
A Schematron document is essentially a set of constraints that apply to XML data. You can express a concrete Schematron constraint in one of two ways.
第一种策略是将元数据添加到约束模式中的appinfo标记中。
The first involves adding it to appinfo tags in the constraint schema.
DELETE employees WHEREemployeeid=@employeeid请注意，如果由于特定于数据库的约束而无法删除记录，删除操作将失败。
Note that the delete operation fails if the record can't be deleted due to database-specific constraints.
DELETE employees WHEREemployeeid=@employeeid请注意，如果由于特定于数据库的约束而无法删除记录，删除操作将失败。
Note that the delete operation fails if the record can't be deleted due to database-specific constraints.
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