A case study on MDD based on LDM.
基于LDM的MDD案例分析。
A LDM helps to reduce total cost of ownership.
LDM有利于减少总体拥有成本。
The extra cost of LDM can be more easily shared.
可以更加轻松地分担额外的LDM成本。
A distant fourth would be a detailed logical data model (LDM).
第四位的是详细的逻辑数据模型(logical data model,LDM)。
Data modeler imports XSD version two and creates a LDM (baseline two) based on it.
数据建模师导入XSD版本2并根据它创建一个LDM(基准2)。
Meanwhile, a LDM captures business entities, their relationships, and business rules.
同时，LDM 将捕获业务实体、它们的关系和业务规则。
Transforming an LDM specification to a UML model is an equally valid and supported use case.
将一个LDM规范转换为一个uml模型也是一个同等有效和受支持的用例。
Like other DNA damage agents, LDM induces cell cycle arrest, apoptosis and mitotic cell death.
作为DNA损伤剂，LDM可以诱导细胞周期阻滞、凋亡和裂亡。
This paper presents a new specification of LDM-Pack tree, which renders trees rapidly with high fidelity.
提出了一种层次深度拼图集的树木表示方法，可以快速绘制树木，并有较高真实感效果。
Practices prove that applying LDM to filter GCP is to raise the precision of geometric rectifying effectively.
实践证明，应用最长距离法筛选地面控制点，是提高遥感影像多项式几何校正精度的有效途径。
Open the LDM file to see the new and existing UML structures, now rendered in er notation, as shown in Figure 13.
打开这个LDM文件查看新的和现有的UML结构，它们现在以ER标记呈现，如图13所示。
This article describes an example use case in which a UML modeler is transformed into a logical data model (LDM).
本文将描述一个示例用例，其中，一个uml模型将被转换为一个逻辑数据模型(LDM)。
The data modeler transforms part, or the whole, of an LDM into a class model using the LDM-to-UML transformation.
数据建模师使用ldm到uml转换将LDM的全部或一部分转换成一个类模型。
Optionally, data modeler can transform a LDM into a physical database schema and DDL using Rational Data Architect.
数据建模师还可以选择使用RationalDataArchitect 将LDM 转换为一个物理数据库模式和DDL。
Business items could become a basis for defining the Logical Data Models (LDMs), if a LDM does not exist for that business domain.
如果某个业务域没有现成的LDM，那么可根据业务项定义逻辑数据模型(LDM)。
Some semantics may be lost during transformation from LDM to business items because LDM holds richer semantics than business items.
在从LDM转换到业务项时可能会丢失一些语义，因为ldm语义要比业务项语义丰富。
Data models may become so tightly coupled with particular business processes that future projects need to modify a LDM significantly.
由于数据模型可能会与特定业务流程紧密耦合，以至于将来的项目需要对LDM进行大量修改。
This article later describes a real-life case study on using a LDM as the semantic source and transforming it into various it artifacts.
本文稍后将介绍一个真实的案例分析，研究使用LDM作为语义源并将其转换为各种IT工件。
LDM Entities and Attributes and their descriptions are often either derived from, or later become, an organization's business vocabulary.
LDM实体和属性及其描述通常先是源自，然后又成为组织的业务词汇。
LDM should avoid being bound by a physical database, an application, or a business unit in order to be a true semantic hub across the enterprise.
LDM应避免被物理数据库、应用程序或业务单元束缚，从而实现跨整个企业的语义中心。
If you're going to create an LDM then I highly suggest you only capture information in those models which provide immediate benefit to your team.
如果您将创建LDM，那么我强烈建议您只获取向您的团队提供立即收益的那些模型中的信息。
A LDM creates an enterprise view of data, helps to reduce data redundancy, improve data quality, and speed up integration and green-field projects.
通过创建一个企业数据视图，LDM有助于降低数据冗余、改善数据质量、加速集成，以及开发新(green - field)项目。
To import the UML model and associated glossary classifications as an LDM, define an instance of transformation from UML to LDM, as shown in Figure 10.
要将uml模型及其关联术语表分类作为一个LDM导入，需要定义一个从uml到ldm的转换实例，如图10所示。
The data modeler can then use this LDM file as input to a transformation to DBM and ultimately to DDL to deploy to the database management system (DBMS).
数据建模师然后可以使用这个LDM文件作为输入，执行一个从 LDM到DBM最终到DDL 的转换，以便将其部署到数据库管理系统（DBMS）。
A well-formed LDM can provide a quick overview to the key business information in a complex IT environment, which reflects business information requirements.
一个格式良好的LDM可以提供对复杂IT环境中的关键业务信息的快速预览，从而反映业务信息需求。
Some semantics can be lost during the transformation from an LDM to a class model because LDMs hold richer data semantics (as in, primary keys) than class models.
在从LDM转换到类模型时，有些语义可能会丢失，因为LDM的数据语义比类模型更加丰富(例如主键)。
This synchronizes model assets between the worlds of UML and LDM, which are all connected to and classified by a common business taxonomy within business Glossary.
这就便于在uml和ldm之间同步化模型资产，这些资产都连接到Business Glossary中的一个公共业务分类系统并根据该系统进行分类。
The team then reviewed that LDM with business analysts and development teams to ensure the definition and standards of this LDM are consistent with the rest of the organization.
团队随后与业务分析师和开发团队对该LDM进行了审核，以确保LDM的定义和标准与企业其余部分保持一致。
The UML-LDM and LDM-UML transforms are used by creating a transformation configuration (identifying the source and target models) and running the transform, as Figure 6 illustrates.
通过创建转换配置（标识源和目标模型）和运行转换，就可以使用 UML-LDM 和 LDM-UML转换，如图 6 所示。
Because business items are highly de-normalized and document centric, straight transformation from business items to a LDM without careful design and normalization could produce a poor LDM.
由于业务项高度不规范并以文档为中心，如果未经严谨设计和规范化，从业务项到LDM的简单转换将导致糟糕的LDM。
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