ActiveRecord并非全对象关系型映射层。
本文首先给出了二维环面上抛物型映射可逆的充分必要条件，完善了P。
This dissertation gives necessary and sufficient conditions for 2-torus parabolic maps to be invertible, which improves p.
本文讨论2 -距离空间中某些膨胀型映射对的不动点的存在性，唯一性和不动点集的性质。
This paper discusses existence and uniqueness of the fixed point of some expansion type mapping pairs and properties of fixed point sets in the 2-metric space.
在WF -模糊度量空间中建立压缩型和局部压缩型映射的不动点理论，推广一些重要的不动点定理。
The fixed point theorems for mappings of contractive type and locally contractive type on WF-fuzzy metric Spaces, which extend several important fixed point theorems, are established.
本文给出了2 -距离空间中有理压缩型映射对的几个公共不动点定理，改进并推广了某些已有的结果。
In this paper we present several common fixed point theorems for the form of rational compress pair of mapping in 2-metric space. The results improve and generalize some known results.
在注册一个关系数据源上的一个数据源对象时，默认的类型映射决定如何将一个数据源数据类型映射到每个列的DB 2类型。
During the registration of a data source object on a relational data source, default type mappings determine how a data source data type should map to a DB2 type for each column.
或许避免在程序执行期间创建这些类的最佳方式在于，避免在应用程序的时间关键型部分使用反射服务来从字符串映射类、字段或方法。
Probably the best way to avoid their creation during the program is to avoid using reflection services to map class, field, or methods from strings during the time-critical parts of your application.
如果检查后发现带注释的XML模式有效，那么映射信息将被提取并以即用型(ready - to - use)二进制格式存储在编目表中。
If the annotated XML schema is deemed valid, the mapping information is extracted and stored in catalog tables in a ready-to-use binary format.
在本文中，我提供了从oracle型CONNECT BY递归查询语法到DB 2中遵从标准的使用UNION ALL的递归公共表表达式的通用映射。
In this article I provided generic mappings from the Oracle style CONNECT BY recursive query syntax to DB2's standard compliant recursive common table expressions using UNION ALL.
您不能拥有同一类型工件的两个区域映射。
You cannot have two field mappings to the same type of artifact.
但是，在很多情况下，通过将XSLT应用到服务消息上，可以将自下而上型消息的服务格式映射到自上而下的设计。
However, by applying XSLT to the service messages, in many cases, you can map the service format of the bottom-up style messages to the top-down design.
泛型类可被视为将它们的参数映射成新实例化的函数。
Generic classes can be viewed as functions mapping their arguments to new instantiations.
有些情况下，您可能已经创建了一个到某个目标的映射，并认识到您应该将此映射创建为从相同源到同一类型的不同目标。
In some cases, you may have already created a mapping to a certain target and then realize that you meant to create that mapping from the same source but to a different target with the same type.
迁移到DB 29的另一个好处是，混合型存储引擎和查询优化器“理解”XML，可以把涉及XML的查询映射为关系语法。
Another benefit of the move to DB2 9 is the hybrid storage engine and a query optimizer that "understands" XML (mapping to relational algebra for queries involving XML).
activerecord类是Rails的一个核心组成部分，它将关系型表映射为Ruby对象，使其成为控制器可以操作并能在视图中显示的数据。
A central component of Rails is the class ActiveRecord, which maps relational tables to Ruby objects and thereby to the data manipulated by controllers and shown in views.
NET实体框架还提供了一个强大的映射机制，让开发者能够很容易 地将EDM架构和实际的关系型数据库映射起来。
The Entity Framework also includes a powerful mapping engine that allows developers to map the EDM schema to a relational database for actual storage.
我们在关系型数据库中完成了被称为“Soft NUMA ”的技术，它通过端口映射在系统内部得以获得良好的分布式工作效果。
The main thing done in the relational database was to use "soft NUMA" and port mapping to get a good distribution of work within the system.
原因是：mixin和泛型类都能被认为是将现有类映射到新类的函数。
The reason: both mixins and generic classes can be thought of as functions mapping existing classes to new classes.
这个哈希映射把没有参数类型的泛型类的字段描述符字符串与这个类的GenericTemplate关联起来。
This hash map associates the field descriptor string for a generic class without any parameter types to the GenericTemplate for that class.
Django提供了自己的对象关系型数据映射组件(object - relationalmapper,orm)库，它可以通过Python对象接口支持动态数据库访问。
Django comes with its own object-relational mapper (ORM) library that supports dynamic database access through a Python object interface.
本文主要研究半序f -型拓扑空间中单调映射的不动点定理和一类非线性算子方程的可解性。
In this paper, we mainly discuss the fixed point theorems of monotone mappings and the solvability of a class of nonlinear operator equations in partially ordered F-type topological Spaces.
完备映射不能保持具有点可数型的空间。
Spaces of pointwise countable type are not preserved by perfect mappings.
本文的主要结果是证明有限到一的连续闭映射保持具有点可数型的空间。
In this paper it is shown that Spaces of pointwise countable type are preserved by fi-nite-to - one, continuous, closed mappings.
利用半群理论等方法讨论了半线性抛物型边界控制系统解映射的有界性 。
In this paper, the compactness of solution map for parabloic system with a nonlinear boundary control using semigroup theory is obtained.
持久化框架较好地解决了关系型数据库的对象持久化问题，对象关系映射是持久化框架的核心内容。
The persistence framework solves the problem of object persistence in relational databases. Object relational mapping is the core of persistence framework.
针对电压型三相三电平变流器，提出了一种基于扇区映射、适用于三电平变流器控制、形式简洁的SVPWM算法。
As for the three-phase three-level voltage source converter, a simple SVPWM algorithm based on the sector mapping for controlling three-level converter is proposed.
本文给出了凝聚映射的范数型锥拉伸和压缩定理。
In this paper, we showed the nome-type compression and expansion theorem of condensing maps.
然而由于复杂的树形XML文档和简单平坦的关系型数据库表结构之间固有的不匹配，使得XML到关系型数据库的映射实现十分困难，因此成为当前的一个热门研究课题。
However, due to the mismatch between the XML's tree structure and flat relational tables, mapping XML document to relational database is an involved problem. So it becomes a pop research direction.
在建立有限元网格模型中，应用了映射网格、自由网格及金字塔型过渡网格的混合模型。
The mixed model of free mesh, mapped mesh and transitional pyramid mesh were used in the method.
在建立有限元网格模型中，应用了映射网格、自由网格及金字塔型过渡网格的混合模型。
The mixed model of free mesh, mapped mesh and transitional pyramid mesh were used in the method.
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