Some High-level Language Constructs for Data of Type Relation (Abstract).

conf/sigmod/77 Joachim W. Schmidt Some High-level Language Constructs for Data of Type Relation (Abstract). 9 1977 SIGMOD Conference db/conf/sigmod/sigmod77.html#Schmidt77 http://doi.acm.org/10.1145/509404.509407 db/conf/sigmod/Schmidt77.html SIGMOD77/P009.PDF