虚拟抽象被运用到服务器和存储，这样可以进行逻辑管理，而不是一个个的物理实体。
Virtual abstraction is employed so that servers and storage can be managed as logical rather than individual physical entities.
技术性数据质量维定义在逻辑数据建模实体完整性和引用完整性规则中常见的数据质量标准。
The technical data quality dimension defines the data quality criteria often found in logical data modeling entity integrity and referential integrity rules.
它们由逻辑数据模型转换而来，其中实体和关系转换为表、列、主键、外键以及约束。
They are transformations of logical data model where the entities and relationships are transformed into tables, columns, primary keys, foreign keys, and constraints.
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