一、表的創建
create table classroom(
building varchar (15),
room_number varchar (7),
capacity numeric (4,0),
primary key(building, room_number));
create table department(
dept_name varchar (20),
building varchar (15),
budget numeric (12,2) check (budget > 0),
primary key (dept_name));
create table course(
course_id varchar(7),
title varchar(50),
dept_name varchar(20),
credits numeric(2,0) check(credits > 0),
primary key (course_id),
foreign key (dept_name) references department(dept_name) on delete set null);
create table instructor(
ID varchar (5),
name varchar (20) not null,
dept_name varchar (20),
salary numeric (8,2) check (salary > 29000),
primary key (ID),
foreign key (dept_name) references department(dept_name) on delete set null);
create table section(
course_id varchar (8),
sec_id varchar (8),
semester varchar (6) check (semester in('Fall', 'Winter', 'Spring', 'Summer')),
year numeric (4,0) check (year > 1701 and year < 2100),
building varchar (15),
room_number varchar (7),
time_slot_id varchar (4),
primary key (course_id,sec_id,semester,year),
foreign key (course_id) references course(course_id) on delete cascade,
foreign key (building, room_number) references classroom(building, room_number) on delete set null);
create table teaches(
ID varchar (5),
course_id varchar (8),
sec_id varchar (8),
semester varchar (6),
year numeric (4,0),
primary key (ID, course_id, sec_id, semester, year),
foreign key (course_id, sec_id, semester, year) references section(course_id, sec_id, semester, year) on delete cascade,
foreign key (ID) references instructor(ID) on delete cascade);
create table student(
ID varchar (5),
name varchar (20) not null,
dept_name varchar (20),
tot_cred numeric (3,0) check (tot_cred >= 0),
primary key (ID),
foreign key (dept_name) references department(dept_name) on delete set null);
create table takes(
ID varchar (5),
course_id varchar (8),
sec_id varchar (8),
semester varchar (6),
year numeric (4,0),
grade varchar (2),
primary key (ID, course_id, sec_id, semester, year),
foreign key (course_id, sec_id, semester, year) references section(course_id, sec_id, semester, year) on delete cascade,
foreign key (ID) references student(ID) on delete cascade);
create table advisor(
s_ID varchar (5),
i_ID varchar (5),
primary key (s_ID),
foreign key (i_ID) references instructor (ID)
on delete set null,
foreign key (s_ID) references student (ID) on delete cascade);
create table prereq(
course_id varchar(8),
prereq_id varchar(8),
primary key (course_id, prereq_id),
foreign key (course_id) references course(course_id) on delete cascade,
foreign key (prereq_id) references course(course_id));
create table timeslot(
time_slot_id varchar (4),
day varchar (1) check (day in ('M', 'T', 'W', 'R', 'F', 'S', 'U')),
start_time time,
end_time time,
primary key (time_slot_id, day, start_time));
create table timeslot(
time_slot_id varchar (4),
day varchar (1),
start_hr numeric (2) check (start_hr >= 0 and start_hr < 24),
start_min numeric (2) check (start_min >= 0 and start_min < 60),
end_hr numeric (2) check (end_hr >= 0 and end_hr < 24),
end_min numeric (2) check (end_min >= 0 and end_min < 60),
primary key (time_slot_id, day, start_hr, start_min));
二、樣本數據
insert into classroom values
("Packard",101,500),
("Painter",514,10),
("Taylor",3128,70),
("Waston",100,30),
("Watson",120,50);
insert into department values
("Biology","Waston",90000),
("Comp. Sci.","Taylor",100000),
("Elec. Eng.","Taylor",85000),
("Finance","Painter",120000),
("History","Painter",50000),
("Music","Packard",80000),
("Physics","Waston",70000);
insert into course values
("BIO-101","Intro. to Biology","Biology",4),
("BIO-301","Genetics","Biology",4),
("BIO-399","Computational Biology","Biology",4),
("CS-101","Intro. to Computer Science","Comp. Sci.",4),
("CS-190","Game Design","Comp. Sci.",4),
("CS-315","Robotics","Comp. Sci.",3),
("CS-319","Image Processing","Comp. Sci.",3),
("CS-347","Database System Concepts","Comp. Sci.",3),
("EE-181","Intro. to Digital Systems","Elec. Eng.",3),
("FIN-201","Investment Banking","Finance",3),
("HIS-351","World History","History",3),
("MU-199","Music Video Production","Music",3),
("PHY-101","Physical Principles","Physics",4);
insert into instructor values
(10101,"Srinivasan","Comp. Sci.",65000),
(12121,"Wu","Finance",90000),
(76543,"Singh","Finance",80000),
(15151,"Mozart","Music",40000),
(22222,"Einstein","Physics",95000),
(33456,"Gold","Physics",87000),
(45565,"Katz","Comp. Sci.",75000),
(83821,"Brandt","Comp. Sci.",92000),
(58583,"Califieri","History",62000),
(32343,"El Said","History",60000),
(76766,"Crick","Biology",72000),
(98345,"Kim","Elec. Eng.",80000);
insert into section values
("BIO-101",1,"Summer",2017,"Painter",514,"B"),
("BIO-301",1,"Summer",2018,"Painter",514,"A"),
("CS-101",1,"Fall",2017,"Packard",101,"H"),
("CS-101",1,"Spring",2018,"Packard",101,"F"),
("CS-190",1,"Spring",2017,"Taylor",3128,"E"),
("CS-190",2,"Spring",2017,"Taylor",3128,"A"),
("CS-315",1,"Spring",2018,"Watson",120,"D"),
("CS-319",1,"Spring",2018,"Watson",100,"B"),
("CS-319",2,"Spring",2018,"Taylor",3128,"C"),
("CS-347",1,"Fall",2017,"Taylor",3128,"A"),
("EE-181",1,"Spring",2017,"Taylor",3128,"C"),
("FIN-201",1,"Spring",2018,"Packard",101,"B"),
("HIS-351",1,"Spring",2018,"Painter",514,"C"),
("MU-199",1,"Spring",2018,"Packard",101,"D"),
("PHY-101",1,"Fall",2017,"Watson",100,"A");
insert into teaches values
(10101,"CS-101",1,"Fall",2017),
(10101,"CS-315",1,"Spring",2018),
(10101,"CS-347",1,"Fall",2017),
(12121,"FIN-201",1,"Spring",2018),
(15151,"MU-199",1,"Spring",2018),
(22222,"PHY-101",1,"Fall",2017),
(32343,"HIS-351",1,"Spring",2018),
(45565,"CS-101",1,"Spring",2018),
(45565,"CS-319",1,"Spring",2018),
(76766,"BIO-101",1,"Summer",2017),
(76766,"BIO-301",1,"Summer",2018),
(83821,"CS-190",1,"Spring",2017),
(83821,"CS-190",2,"Spring",2017),
(83821,"CS-319",2,"Spring",2018),
(98345,"EE-181",1,"Spring",2017);
insert into student values
(00128,"Zhang","Comp. Sci.",102),
(12345,"Shankar","Comp. Sci.",32),
(19991,"Brandt","History",80),
(23121,"Chavez","Finance",110),
(44553,"Peltier","Physics",56),
(45678,"Levy","Physics",46),
(54321,"Williams","Comp. Sci.",54),
(55739,"Sanchez","Music",38),
(70557,"Snow","Physics",0),
(76543,"Brown","Comp. Sci.",58),
(76653,"Aoi","Elec. Eng.",60),
(98765,"Bourikas","Elec. Eng.",98),
(98988,"Tanaka","Biology",120);
insert into takes values
(00128,"CS-101",1,"Fall",2017,"A"),
(00128,"CS-347",1,"Fall",2017,"A-"),
(12345,"CS-101",1,"Fall",2017,"C"),
(12345,"CS-190",2,"Spring",2017,"A"),
(12345,"CS-315",1,"Spring",2018,"A"),
(12345,"CS-347",1,"Fall",2017,"A"),
(19991,"HIS-351",1,"Spring",2018,"B"),
(23121,"FIN-201",1,"Spring",2018,"C+"),
(44553,"PHY-101",1,"Fall",2017,"B-"),
(45678,"CS-101",1,"Fall",2017,"F"),
(45678,"CS-101",1,"Spring",2018,"B+"),
(45678,"CS-319",1,"Spring",2018,"B"),
(54321,"CS-101",1,"Fall",2017,"A-"),
(54321,"CS-190",2,"Spring",2017,"B+"),
(55739,"MU-199",1,"Spring",2018,"A-"),
(76543,"CS-101",1,"Fall",2017,"A"),
(76543,"CS-319",2,"Spring",2018,"A"),
(76653,"EE-181",1,"Spring",2017,"C"),
(98765,"CS-101",1,"Fall",2017,"C-"),
(98765,"CS-315",1,"Spring",2018,"B"),
(98988,"BIO-101",1,"Summer",2017,"A"),
(98988,"BIO-301",1,"Summer",2018,null);
insert into advisor values
(00128,45565),
(12345,10101),
(23121,76543),
(44553,22222),
(45678,22222),
(76543,45565),
(76653,98345),
(98765,98345),
(98988,76766);
insert into time_slot values
("A","M","8:00","8:50"),
("A","W","8:00","8:50"),
("A","F","8:00","8:50"),
("B","M","9:00","9:50"),
("B","W","9:00","9:50"),
("B","F","9:00","9:50"),
("C","M","11:00","11:50"),
("C","W","11:00","11:50"),
("C","F","11:00","11:50"),
("D","M","13:00","13:50"),
("D","W","13:00","13:50"),
("D","F","13:00","13:50"),
("E","T","10:30","11:45"),
("E","R","10:30","11:45"),
("F","T","14:30","15:45"),
("F","R","14:30","15:45"),
("G","M","16:00","16:50"),
("G","W","16:00","16:50"),
("G","F","16:00","16:50"),
("H","W","10:00","12:30");
insert into prereq values
("BIO-301","BIO-101"),
("BIO-399","BIO-101"),
("CS-190","CS-101"),
("CS-315","CS-101"),
("CS-319","CS-101"),
("CS-347","CS-101"),
("EE-181","PHY-101");