2
login VARCHAR UNIQUE NOT NULL,
3
loginid SERIAL PRIMARY KEY NOT NULL,
8
studentid VARCHAR -- may be null
11
CREATE TABLE offering (
12
offeringid SERIAL PRIMARY KEY NOT NULL,
13
subj_name VARCHAR NOT NULL,
14
subj_code VARCHAR NOT NULL,
15
year CHAR(4) NOT NULL,
16
semester CHAR(1) NOT NULL,
20
CREATE TABLE project (
21
projectid SERIAL PRIMARY KEY NOT NULL,
24
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
28
CREATE TABLE project_group (
29
groupnm VARCHAR NOT NULL,
30
groupid SERIAL PRIMARY KEY NOT NULL,
31
offeringid INT4 REFERENCES offering (offeringid),
33
createdby INT4 REFERENCES login (loginid) NOT NULL,
34
epoch TIMESTAMP NOT NULL,
35
UNIQUE (offeringid, groupnm)
38
CREATE TABLE group_invitation (
39
loginid INT4 REFERENCES login (loginid) NOT NULL,
40
groupid INT4 REFERENCES project_group (groupid) NOT NULL,
41
inviter INT4 REFERENCES login (loginid) NOT NULL,
42
invited TIMESTAMP NOT NULL,
44
UNIQUE (loginid,groupid)
47
CREATE TABLE group_member (
48
loginid INT4 REFERENCES login (loginid),
49
groupid INT4 REFERENCES project_group (groupid),
50
projectid INT4 REFERENCES project (projectid),
51
UNIQUE (loginid,projectid),
52
PRIMARY KEY (loginid,groupid)
55
CREATE TABLE enrolment (
56
loginid INT4 REFERENCES login (loginid),
57
offeringid INT4 REFERENCES offering (offeringid),
59
special_result VARCHAR,
61
special_supp_result VARCHAR,
63
PRIMARY KEY (loginid,offeringid)
66
CREATE TABLE assessed (
67
assessedid SERIAL PRIMARY KEY NOT NULL,
68
loginid INT4 REFERENCES login (loginid),
69
groupid INT4 REFERENCES project_group (groupid),
70
-- exactly one of loginid and groupid must be non-null
71
CHECK ((loginid IS NOT NULL AND groupid IS NULL)
72
OR (loginid IS NULL AND groupid IS NOT NULL))
75
CREATE TABLE project_extension (
76
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
77
projectid INT4 REFERENCES project (projectid) NOT NULL,
78
deadline TIMESTAMP NOT NULL,
79
approver INT4 REFERENCES login (loginid) NOT NULL,
83
CREATE TABLE project_mark (
84
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
85
projectid INT4 REFERENCES project (projectid) NOT NULL,
87
marker INT4 REFERENCES login (loginid) NOT NULL,
94
CREATE TABLE problem (
95
problemid SERIAL PRIMARY KEY NOT NULL,
99
CREATE TABLE problem_tag (
100
problemid INT4 REFERENCES problem (problemid),
101
tag VARCHAR NOT NULL,
103
standard BOOLEAN NOT NULL,
104
added_by INT4 REFERENCES login (loginid) NOT NULL,
105
date TIMESTAMP NOT NULL,
106
PRIMARY KEY (problemid,added_by,tag)
109
CREATE TABLE problem_test_case (
110
problemid INT4 REFERENCES problem (problemid) NOT NULL,
111
testcaseid SERIAL UNIQUE NOT NULL,
114
visibility VARCHAR CHECK (visibility in ('public', 'protected', 'private'))
117
CREATE TABLE problem_test_case_tag (
118
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
119
tag VARCHAR NOT NULL,
121
standard BOOLEAN NOT NULL,
122
added_by INT4 REFERENCES login (loginid) NOT NULL,
123
date TIMESTAMP NOT NULL,
124
PRIMARY KEY (testcaseid,added_by,tag)
127
CREATE TABLE problem_attempt (
128
problemid INT4 REFERENCES problem (problemid) NOT NULL,
129
loginid INT4 REFERENCES login (loginid) NOT NULL,
130
date TIMESTAMP NOT NULL,
131
attempt VARCHAR NOT NULL,
132
complete BOOLEAN NOT NULL,
133
PRIMARY KEY (problemid,loginid,date)
136
CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
138
CREATE TABLE problem_attempt_breakdown (
139
problemid INT4 REFERENCES problem (problemid) NOT NULL,
140
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
141
loginid INT4 REFERENCES login (loginid) NOT NULL,
142
date TIMESTAMP NOT NULL,
146
CREATE TABLE problem_prerequisite (
147
parent INT4 REFERENCES problem (problemid) NOT NULL,
148
child INT4 REFERENCES problem (problemid) NOT NULL,
149
PRIMARY KEY (parent,child)