TY - BOOK ED - International Conference on Extending Databases Technology( 3rd : 1992 : Vienna ) ED - International Conference on Extending Databases Technology 3rd TI - Advances in database technology : proceedings SN - 3-540-55270-7 U1 - 5.74 PY - 1992/// CY - Berlin PB - Springer Verlag KW - Data base ER -