数据志 meaning in English
lineage
Examples
- Data lineage includes two parts : ( 1 ) the set of source data items which exactly produces the warehouse data item ; ( 2 ) the processes which contribute to the set of source data items
数据志包含两个部分：起始数据集和作用在该数据集上的数据处理过程。获取数据志的过程称为数据志跟踪( datalineagetracing ) 。 - The exact history of a given warehouse data item , including the complete description of its acquisition , transformation and integration is termed the data lineage
在数据仓库系统中，一个仓库数据项的精确的历史沿革，即该数据项从获取、转换、集成到现状这一完整过程的相关描述和信息，称为数据志( datalineage ) 。 - These theorems is the basis and guideline for constructing and verifying the weak derivation set according to the invertibilrty of attribute mapping , thus improves the basic theories of data lineage tracing
这些定理为作者根据属性映射的可逆性构造和验证弱起源集提供了基本依据和指导思想，丰富了数据志跟踪的基本理论。 - Then , this thesis presents the formal definition of derivation set of transformation diagram , proves the derivation set transitivity theorem , and shows the basic processes for tracing transformation diagram
作者基于导出关系给出了转换图的起源集的形式化定义，证明了起源集的传递性定理。在此基础上，设计了跟踪转换图的数据志的基本过程。 - Following is the primary work and contributions of this thesis . first , the concepts about data lineage tracing are completed and refined , and the formal definition of derivation set and supplementary set are provided . these definitions form the basis for derivation set tracing
本文的主要工作与创新有以下几个方面：作者首先对与数据志相关的概念进行了完善和细化，给出了起源集的形式化定义，并提出了补集无关和补集相关的概念。