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VLDB
1989
ACM
98views Database» more  VLDB 1989»
15 years 1 months ago
A Family of Incomplete Relational Database Models
In this paper. we utilize intervals for unknown values in incompleterelational databases.We usetablesto representunknown relations. First, we define three partial tuple types in a...
Adegbemiga Ola, Gultekin Özsoyoglu
ISTA
2004
14 years 11 months ago
A Conceptual Modeling Technique Based on Semantically Complete Model, Its Applications
: The article proposes a conceptual modeling technique based on Semantically Complete model, the main property of which is that relations carry complete information about interconn...
Vladimir Ovchinnikov
ER
2008
Springer
123views Database» more  ER 2008»
14 years 11 months ago
Modeling and Querying E-Commerce Data in Hybrid Relational-XML DBMSs
Abstract. Data in many industrial application systems are often neither completely structured nor unstructured. Consequently semi-structured data models such as XML have become pop...
Lipyeow Lim, Haixun Wang, Min Wang
ADC
2007
Springer
164views Database» more  ADC 2007»
15 years 4 months ago
Computer Assisted Assessment of SQL Query Skills
Structured Query Language (SQL) is the dominant language for querying relational databases today, and is an essential topic in introductory database courses in higher education. E...
Stijn Dekeyser, Michael de Raadt, Tien Yu Lee
IADIS
2003
14 years 11 months ago
Querying Databases and XML Documents: Comparative Study and a New Proposal
XML has become the most useful standard of data interchange in the web and e-business world and there is a large amount of information stored in this format. Nonetheless, a large ...
Ana Fermoso García, María José...