Chiu, Dah MingDah MingChiuHo, Y. C.2022-03-092022-03-091980https://repository.sfu.edu.hk/handle/sfu/2544In this paper we outline a general methodology illustrated by specific examples for the optimal interpretation of a class of semi-join queries in distributed database systems.enA methodology for interpreting tree queries into optimal semi-join expressionsconference proceedings10.1145/582250.582277