Kazimierz Subieta. Linguistic approach to database theory: DDL-s for hierarchical model. Inf. Syst., 3(3):203-208, 1978.
@article{Subieta78, title = {Linguistic approach to database theory: DDL-s for hierarchical model}, author = {Kazimierz Subieta}, year = {1978}, tags = {database, systematic-approach}, researchr = {https://researchr.org/publication/Subieta78}, cites = {0}, citedby = {0}, journal = {Inf. Syst.}, volume = {3}, number = {3}, pages = {203-208}, }