表(一)Student (學生表)
-- Create table create table STUDENT ( sno VARCHAR2(3) not null, sname VARCHAR2(8) not null, ssex VARCHAR2(2) not null, sbirthday DATE, class VARCHAR2(5) ) tablespace USERS pctfree 10 initrans 1 maxtrans 255; -- Add comments to the table comment on table STUDENT is '學生表'; -- Add comments to the columns comment on column STUDENT.sno is '學號(主鍵)'; comment on column STUDENT.sname is '學生姓名'; comment on column STUDENT.ssex is '學生性別'; comment on column STUDENT.sbirthday is '學生出生年月'; comment on column STUDENT.class is '學生所在班級';
表(一)Student中的數據
表(二)Course(課程表)
-- Create table create table COURSE ( cno VARCHAR2(5) not null, cname VARCHAR2(10) not null, tno VARCHAR2(3) not null ) tablespace USERS pctfree 10 initrans 1 maxtrans 255; -- Add comments to the table comment on table COURSE is '課程表'; -- Add comments to the columns comment on column COURSE.cno is '課程號(主鍵)'; comment on column COURSE.cname is '課程名稱'; comment on column COURSE.tno is '教工編號(外鍵)';
表(二)Course(課程表)中的數據
表(三)Score(成績表)
-- Create table create table SCORE ( sno VARCHAR2(3) not null, cno VARCHAR2(5) not null, degree NUMBER(4,1) ) tablespace USERS pctfree 10 initrans 1 maxtrans 255; -- Add comments to the table comment on table SCORE is '成績表'; -- Add comments to the columns comment on column SCORE.sno is '學號(外鍵)'; comment on column SCORE.cno is '課程號(外鍵)'; comment on column SCORE.degree is '成績';
表(三)Score(成績表)中的數據
表(四)Teacher(教師表)
-- Create table create table TEACHER ( tno VARCHAR2(3) not null, tname VARCHAR2(4) not null, tsex VARCHAR2(2) not null, tbirthday DATE, prof VARCHAR2(6), depart VARCHAR2(10) not null ) tablespace USERS pctfree 10 initrans 1 maxtrans 255; -- Add comments to the table comment on table TEACHER is '教師表'; -- Add comments to the columns comment on column TEACHER.tno is '教工編號(主鍵)'; comment on column TEACHER.tname is '教工姓名'; comment on column TEACHER.tsex is '教工性別'; comment on column TEACHER.tbirthday is '教工出生年月'; comment on column TEACHER.prof is '職稱'; comment on column TEACHER.depart is '教工所在部門';
表(四)Teacher(教師表)中的數據