Normalization theory for XML

Abstract

Since the beginnings of the relational model, it was clear for the database community that the process of designing a database is a nontrivial and time-consuming task. Even for simple application domains, there are many possible ways of storing the data of interest.

A complete XML data dependency model

“…The label of the child value node of each attribute node is referred to as attribute value. For example, in Figure 2(a), the attribute value of "name [3]" is "John".…”

“…They can be denoted by (2) name [3] John [4] title [5] professor [6] salary [7] 3000 [8] teacher name [4] John [5] title [6] professor [7] salary [8] 3000 [9] teacher In Figure 2( …”

“…Therefore, researchers propose many kinds of models to express XML data dependencies [2,3,4,5,6,7,8]. For these models, we cannot help doubting: can they capture the essential data dependencies in XML faithfully and completely?…”

On Defining Keys for XML

“…The data * This research is supported with Australian Research Council(ARC) Discovery Project Fund and University President Scholarship(UPS). centric challenge of XML [9,10,11] has necessitated to enrich the semantics of data which can be done through XML keys [12,13], one of the important integrity constraints for XML [14,15,16].…”

XML Schema Transformation Considering Semantic Constraint

“…이에 따라 XML 데이터를 관계형 데이터베이스에 저장하기 위한 다양한 방법 들이 연구되고 발표되었다. XML의 데이터 중심 연구 [7][8][9] 에서 XML의 중요한 무결성 제약조건의 하나인 키 제약조건 은 XML 키를 통하여 수행하는 데이터의 의미를 보장하는데 필요하고 중요하다 [10][11][12].…”