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- ArticleOctober 2022
Object Normal Form, Fourth Normal Form and Their Application to Database Security
AbstractAn important question in database schema design concerns the effort required to maintain data consistency under updates. Similarly, an important question in database security concerns the effort required to maintain data confidentiality under ...
- articleJanuary 2016
Dealing with Dangerous Data: Part-Whole Validation for Low Incident, High Risk Data
Journal of Database Management (JDBM), Volume 27, Issue 1Pages 29–57https://doi.org/10.4018/JDM.2016010102In certain situations, syntactically valid, but incorrect, data entered into a database can result in near-immediate, catastrophic financial losses for an organization. Examples include: omitting zeros in prices of goods on e-commerce sites; and ...
- ArticleNovember 2008
A Closer Look at the Join-Equality Constraint
OTM '08: Proceedings of the OTM Confederated International Workshops and Posters on On the Move to Meaningful Internet Systems: 2008 Workshops: ADI, AWeSoMe, COMBEK, EI2N, IWSSA, MONET, OnToContent + QSI, ORM, PerSys, RDDS, SEMELS, and SWWSPages 780–786https://doi.org/10.1007/978-3-540-88875-8_102Assume an ORM-diagram where there exist two (or more) paths from one entity type to another through a sequence of many-to-one binary facts. Here we may have a join-equality constraint saying that if we follow the different paths from an instance of the ...
- articleJuly 1982
Decomposition of a relation scheme into Boyce-Codd Normal Form
Decomposition into Boyce-Codd Normal Form (BCNF) with a lossless join and preservation of dependencies is desired in the design of a relational database scheme. However, there may be no decomposition of a relation scheme into BCNF that is dependency ...
- ArticleJanuary 1980
Decomposition of a relation scheme into Boyce-Codd Normal Form
ACM '80: Proceedings of the ACM 1980 annual conferencePages 411–417https://doi.org/10.1145/800176.809996Decomposition into Boyce-Codd Normal Form (BCNF) with a lossless join and preservation of dependencies is desired in the design of a relational database scheme. However, there may be no decomposition of a relation scheme into BCNF that is dependency ...
