课后作业

课后作业/4.1.sql

@@ -0,0 +1,35 @@
+CREATE DATABASE SPJ;
+
+USE SPJ;
+
+CREATE TABLE S(
+SNO VARCHAR(8),
+SNAME VARCHAR(32),
+STATUS SMALLINT,
+CITY VARCHAR(16),
+PRIMARY KEY(SNO)
+);
+
+CREATE TABLE P(
+PNO VARCHAR(8),
+PNAME VARCHAR(32),
+COLOR VARCHAR(8),
+WEIGHT DECIMAL,
+PRIMARY KEY(PNO)
+);
+
+CREATE TABLE J(
+JNO VARCHAR(8) PRIMARY KEY,
+JNAME VARCHAR(32),
+CITY VARCHAR(16)
+);
+
+CREATE TABLE SPJ(
+SNO VARCHAR(8),
+PNO VARCHAR(8),
+JNO VARCHAR(8),
+QTY SMALLINT,
+FOREIGN KEY (SNO) REFERENCES S(SNO),
+FOREIGN KEY (PNO) REFERENCES P(PNO),
+FOREIGN KEY (JNO) REFERENCES J(JNO)
+);