@inproceedings{490, author = {David Toman and Grant Wedell}, title = {Projective Beth Definability and Craig Interpolation for Relational Query Optimization (Material to Accompany Invited Talk)}, year = {2021}, journal = {Projective Beth Definability and Craig Interpolation for Relational Query Optimization (Material to Accompany Invited Talk)}, url = {http://ceur-ws.org/Vol-3009/invited1.pdf}, }