منابع مشابه
Multivalued Knowledge-Base based on multivalued Datalog
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Nesting is a useful technique in many areas of database practice. For instance, nesting is a fundamental operation for the nested relational data model, it can be applied to reduce the level of data redundancy in a database instance, to improve query processing or to convert data from one model to another. We further address the question when nesting operations commute with one another, i.e., w...
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ژورنال
عنوان ژورنال: Bulletin of the Polish Academy of Sciences Mathematics
سال: 2004
ISSN: 0239-7269,1732-8985
DOI: 10.4064/ba52-1-10