@inbook{b5b9aee058354d74b69c373ad5463c86,
title = "Generating relations from XML documents",
abstract = "This paper discusses several mechanisms for creating relations out of XML documents. A relation generator consists of two parts: (1) a tuple of path expressions and (2) an index indicating which path expressions may not be assigned the null value. Evaluating a relation generator involves finding tuples of nodes that satisfy the path expressions and are related to one another in a meaningful fashion. Different semantics for evaluation are given that take into account the possible presence of incomplete information. The complexity of generating relations from documents is analyzed and evaluation algorithms are described.",
author = "Sara Cohen and Yaron Kanza and Yehoshua Sagiv",
year = "2003",
doi = "10.1007/3-540-36285-1_19",
language = "אנגלית",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "285--299",
editor = "Diego Calvanese and Maurizio Lenzerini and Rajeev Motwani",
booktitle = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
address = "גרמניה",
}