The Z notation: a reference manual
The Z notation: a reference manual
Using Z: specification, refinement, and proof
Using Z: specification, refinement, and proof
ZUM '97 Proceedings of the 10th International Conference of Z Users on The Z Formal Specification Notation
Designing Semistructured Databases Using ORA-SS Model
WISE '01 Proceedings of the Second International Conference on Web Information Systems Engineering (WISE'01) Volume 1 - Volume 1
Semistructured Database Design (Web Information Systems Engineering and Internet Technologie)
Semistructured Database Design (Web Information Systems Engineering and Internet Technologie)
XML materialized views and schema evolution in VIREX
Information Sciences: an International Journal
Reasoning about ORA-SS data models using the semantic web
Journal on Data Semantics VII
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The rapid growth of the World Wide Web has resulted in more data being accessed over the Internet. In turn there is an increase in the use of semistructured data, which plays a crucial role in many web applications particularly with the introduction of XML and its related technologies. This increase in use makes the design of good semistructured data structures essential. The Object Relationship Attribute model for Semistructured data (ORA-SS) is a graphical notation for designing and representing semistructured data. In this paper, we demonstrate an approach to formally validate the ORA-SS data models in order to enhance the correctness of semistructured data design. A mathematical semantics for the ORA-SS notation is defined using the Z formal language, and further validation processes are carried out to check the correctness of the semistructured data models at both the schema and instance levels.