4
DROP TABLE group_members;
9
2
login VARCHAR UNIQUE NOT NULL,
10
3
loginid SERIAL PRIMARY KEY NOT NULL,
13
studentid VARCHAR, -- may be null
17
group VARCHAR 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,
18
30
groupid SERIAL PRIMARY KEY NOT NULL,
19
offeringid INT4 REFERENCES offerings (offeringid),
31
offeringid INT4 REFERENCES offering (offeringid),
21
UNIQUE (offeringid, group)
33
createdby INT4 REFERENCES login (loginid) NOT NULL,
34
epoch TIMESTAMP NOT NULL,
35
UNIQUE (offeringid, groupnm)
24
CREATE TABLE group_invitations (
25
loginid INT4 REFERENCES users (loginid),
26
groupid INT4 REFERENCES groups (groupid),
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,
27
44
UNIQUE (loginid,groupid)
30
CREATE TABLE group_members (
31
loginid INT4 REFERENCES users (loginid),
32
groupid INT4 REFERENCES groups (groupid),
33
projectid INT4 REFERENCES projects (projectid),
47
CREATE TABLE group_member (
48
loginid INT4 REFERENCES login (loginid),
49
groupid INT4 REFERENCES project_group (groupid),
50
projectid INT4 REFERENCES project (projectid),
34
51
UNIQUE (loginid,projectid),
35
52
PRIMARY KEY (loginid,groupid)
38
55
CREATE TABLE enrolment (
39
loginid INT4 REFERENCES users (loginid),
40
offeringid INT4 REFERENCES offerings (offeringid),
56
loginid INT4 REFERENCES login (loginid),
57
offeringid INT4 REFERENCES offering (offeringid),
59
special_result VARCHAR,
61
special_supp_result VARCHAR,
44
63
PRIMARY KEY (loginid,offeringid)
48
loginid INT4 PRIMARY KEY REFERENCES users (loginid),
52
CREATE TABLE projects (
53
projectid SERIAL PRIMARY KEY NOT NULL,
56
offeringid INT4 REFERENCES offerings (offeringid) NOT NULL,
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))
60
75
CREATE TABLE project_extension (
62
projectid INT4 REFERENCES projects (projectid) NOT NULL,
76
assessedid INT4 REFERENCES assessed (assesedid) NOT NULL,
77
projectid INT4 REFERENCES project (projectid) NOT NULL,
63
78
deadline TIMESTAMP NOT NULL,
64
approver INT4 REFERENCES users (loginid) NOT NULL,
79
approver INT4 REFERENCES login (loginid) NOT NULL,
68
83
CREATE TABLE project_mark (
70
projectid INT4 REFERENCES projects (projectid) NOT NULL,
84
assessedid INT4 REFERENCES assessed (assesedid) NOT NULL,
85
projectid INT4 REFERENCES project (projectid) NOT NULL,
72
marker INT4 REFERENCES users (loginid) NOT NULL,
87
marker INT4 REFERENCES login (loginid) NOT NULL,
77
PRIMARY KEY (loginid/groupid, projectid, componentid)
80
94
CREATE TABLE problem (
100
114
visibility VARCHAR CHECK (visibility in ('public', 'protected', 'private'))
103
CREATE TABLE problem_test_case_tags (
117
CREATE TABLE problem_test_case_tag (
104
118
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
105
119
tag VARCHAR NOT NULL,
106
120
description VARCHAR,
107
added_by INT4 REFERENCES users (loginid) NOT NULL,
108
when TIMESTAMP NOT NULL,
121
standard BOOLEAN NOT NULL,
122
added_by INT4 REFERENCES login (loginid) NOT NULL,
123
date TIMESTAMP NOT NULL,
109
124
PRIMARY KEY (testcaseid,added_by,tag)
112
127
CREATE TABLE problem_attempt (
113
128
problemid INT4 REFERENCES problem (problemid) NOT NULL,
114
loginid INT4 REFERENCES users (loginid) NOT NULL,
115
when TIMESTAMP NOT NULL,
129
loginid INT4 REFERENCES login (loginid) NOT NULL,
130
date TIMESTAMP NOT NULL,
116
131
attempt VARCHAR NOT NULL,
117
132
complete BOOLEAN NOT NULL,
118
PRIMARY KEY (problemid,loginid,when)
133
PRIMARY KEY (problemid,loginid,date)
121
CREATE INDEX indexname ON problem_attempt (problemid, login);
136
CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
123
138
CREATE TABLE problem_attempt_breakdown (
124
139
problemid INT4 REFERENCES problem (problemid) NOT NULL,
125
140
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
126
loginid INT4 REFERENCES users (loginid) NOT NULL,
127
when TIMESTAMP NOT NULL,
141
loginid INT4 REFERENCES login (loginid) NOT NULL,
142
date TIMESTAMP NOT NULL,
131
CREATE TABLE problem_prerequisites (
146
CREATE TABLE problem_prerequisite (
132
147
parent INT4 REFERENCES problem (problemid) NOT NULL,
133
148
child INT4 REFERENCES problem (problemid) NOT NULL,
134
149
PRIMARY KEY (parent,child)