Schema and Occurence Structure Transformations in Hierarchical Systems
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\begin{bibtex} @inproceedings{DBLP:conf/sigmod/DaleD76, crossref={DBLP:conf/sigmod/76}, title={Schema and Occurence Structure Transformations in Hierarchical Systems}, pages={157-168}, year={1976}, booktitle={SIGMOD Conference}, url={http://www.informatik.uni-trier.de/~ley/db/conf/sigmod/sigmod76.html#DaleD76}, ee={db/conf/sigmod/DaleD76.html}, cdrom={SIGMOD76/P157.PDF}, author={Alfred G. Dale and Nell B. Dale} cite={DBLP:conf/vldb/NavatheF75 , DBLP:conf/sigmod/Collmeyer72 , DBLP:journals/cj/ParsonsDY74} }\end{bibtex}
