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@article {ART-1990-01, author = {Frank Leymann}, title = {{UDH: A Universal Relation System}}, journal = {Data \& Knowledge Engineering}, address = {Amsterdam, The Netherlands}, publisher = {Elsevier Science Publishers B. V.}, volume = {5}, number = {1}, pages = {21--38}, type = {Artikel in Zeitschrift}, month = {M{\"a}rz}, year = {1990}, issn = {0169-023X}, doi = {10.1016/0169-023X(90)90031-8}, keywords = {Relational database; Universal relation; Database semantic; Access path; Data model; Query language; Database navigation; Window; Object scheme; Database handler; Design Implementation; Data manipulation}, language = {Englisch}, cr-category = {H.2 Database Management,
H.2.1 Database Management Logical Design,
H.2.3 Database Management Languages}, department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Architektur von Anwendungssystemen, Architektur von Anwendungssystemen}, abstract = {The concept of a new universal relation system, called UDH (unified database
handler), is given, allowing enquiries of relational databases without
references to the underlying database scheme. Also, UDH attempts to decouple
data manipulation requests from the database scheme via an additional layer
above the database scheme, called semantic object scheme.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-1990-01&engl=0} }
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