ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems.ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems (9th : 1990 : Nashville)：proceedings.ACM,1990.
ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems.ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems(8th : 1989 : Pennsylvania)：proceedings.ACM,1989.
ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems.ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems(6th : 1987 : San Diego)：proceedings.ACM,1987.
