1
CREATE SEQUENCE login_unixid_seq MINVALUE 1000 MAXVALUE 29999 START WITH 5000;
4
2
loginid SERIAL PRIMARY KEY NOT NULL,
5
3
login VARCHAR UNIQUE NOT NULL,
7
5
state VARCHAR NOT NULL CHECK (state in ('no_agreement', 'pending',
8
6
'enabled', 'disabled')),
9
rolenm VARCHAR NOT NULL CHECK (rolenm in ('anyone', 'student',
11
'lecturer', 'admin')),
12
unixid INT UNIQUE DEFAULT nextval('login_unixid_seq') NOT NULL,
7
rolenm VARCHAR NOT NULL CHECK (rolenm in ('guest', 'student',
10
unixid INT UNIQUE NOT NULL, -- unix user id
13
11
nick VARCHAR NOT NULL,
14
12
pass_exp TIMESTAMP,
15
13
acct_exp TIMESTAMP,
16
14
last_login TIMESTAMP,
19
16
fullname VARCHAR NOT NULL,
20
studentid VARCHAR, -- may be null
25
CREATE TABLE subject (
26
subjectid SERIAL PRIMARY KEY NOT NULL,
27
subj_code VARCHAR UNIQUE NOT NULL,
28
subj_name VARCHAR NOT NULL,
29
subj_short_name VARCHAR UNIQUE NOT NULL,
33
CREATE TABLE semester (
34
semesterid SERIAL PRIMARY KEY NOT NULL,
17
studentid VARCHAR -- may be null
20
CREATE TABLE offering (
21
offeringid SERIAL PRIMARY KEY NOT NULL,
22
subj_name VARCHAR NOT NULL,
23
subj_code VARCHAR NOT NULL,
35
24
year CHAR(4) NOT NULL,
36
25
semester CHAR(1) NOT NULL,
38
UNIQUE (year, semester)
41
CREATE OR REPLACE FUNCTION deactivate_semester_enrolments_update()
44
IF OLD.active = true AND NEW.active = false THEN
45
UPDATE enrolment SET active=false WHERE offeringid IN (
46
SELECT offeringid FROM offering WHERE offering.semesterid = NEW.semesterid);
52
CREATE TRIGGER deactivate_semester_enrolments
53
AFTER UPDATE ON semester
54
FOR EACH ROW EXECUTE PROCEDURE deactivate_semester_enrolments_update();
56
CREATE TABLE offering (
57
offeringid SERIAL PRIMARY KEY NOT NULL,
58
subject INT4 REFERENCES subject (subjectid) NOT NULL,
59
semesterid INTEGER REFERENCES semester (semesterid) NOT NULL,
60
groups_student_permissions VARCHAR NOT NULL DEFAULT 'none',
61
CHECK (groups_student_permissions in ('none', 'invite', 'create')),
62
UNIQUE (subject, semesterid)
66
CREATE TABLE project_set (
67
projectsetid SERIAL PRIMARY KEY NOT NULL,
68
offeringid INTEGER REFERENCES offering (offeringid) NOT NULL,
69
max_students_per_group INTEGER NOT NULL DEFAULT 4
72
29
CREATE TABLE project (
73
30
projectid SERIAL PRIMARY KEY NOT NULL,
76
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
33
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
80
37
CREATE TABLE project_group (
81
38
groupnm VARCHAR NOT NULL,
82
39
groupid SERIAL PRIMARY KEY NOT NULL,
83
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
40
offeringid INT4 REFERENCES offering (offeringid),
85
42
createdby INT4 REFERENCES login (loginid) NOT NULL,
86
43
epoch TIMESTAMP NOT NULL,
87
UNIQUE (projectsetid, groupnm)
44
UNIQUE (offeringid, groupnm)
90
CREATE OR REPLACE FUNCTION check_group_namespacing_insertupdate()
95
SELECT offeringid INTO oid FROM project_set WHERE project_set.projectsetid = NEW.projectsetid;
96
PERFORM 1 FROM project_group, project_set WHERE project_set.offeringid = oid AND project_group.projectsetid = project_set.projectsetid AND project_group.groupnm = NEW.groupnm;
98
RAISE EXCEPTION ''a project group named % already exists in offering ID %'', NEW.groupnm, oid;
102
' LANGUAGE 'plpgsql';
104
CREATE TRIGGER check_group_namespacing
105
BEFORE INSERT OR UPDATE ON project_group
106
FOR EACH ROW EXECUTE PROCEDURE check_group_namespacing_insertupdate();
108
47
CREATE TABLE group_invitation (
109
48
loginid INT4 REFERENCES login (loginid) NOT NULL,
110
49
groupid INT4 REFERENCES project_group (groupid) NOT NULL,
133
70
special_supp_result VARCHAR,
135
active BOOL NOT NULL DEFAULT true,
136
72
PRIMARY KEY (loginid,offeringid)
139
CREATE OR REPLACE FUNCTION confirm_active_semester_insertupdate()
144
SELECT semester.active INTO active FROM offering, semester WHERE offeringid=NEW.offeringid AND semester.semesterid = offering.semesterid;
145
IF NOT active AND NEW.active = true THEN
146
RAISE EXCEPTION ''cannot have active enrolment for % in offering %, as the semester is inactive'', NEW.loginid, NEW.offeringid;
150
' LANGUAGE 'plpgsql';
152
CREATE TRIGGER confirm_active_semester
153
BEFORE INSERT OR UPDATE ON enrolment
154
FOR EACH ROW EXECUTE PROCEDURE confirm_active_semester_insertupdate();
156
75
CREATE TABLE assessed (
157
76
assessedid SERIAL PRIMARY KEY NOT NULL,
158
77
loginid INT4 REFERENCES login (loginid),
159
78
groupid INT4 REFERENCES project_group (groupid),
160
projectid INT4 REFERENCES project (projectid) NOT NULL,
161
79
-- exactly one of loginid and groupid must be non-null
162
80
CHECK ((loginid IS NOT NULL AND groupid IS NULL)
163
81
OR (loginid IS NULL AND groupid IS NOT NULL))
166
84
CREATE TABLE project_extension (
167
85
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
86
projectid INT4 REFERENCES project (projectid) NOT NULL,
168
87
deadline TIMESTAMP NOT NULL,
169
88
approver INT4 REFERENCES login (loginid) NOT NULL,
173
CREATE TABLE project_submission (
174
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
175
path VARCHAR NOT NULL,
176
revision INT4 NOT NULL
179
92
CREATE TABLE project_mark (
180
93
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
94
projectid INT4 REFERENCES project (projectid) NOT NULL,
182
96
marker INT4 REFERENCES login (loginid) NOT NULL,
190
103
CREATE TABLE problem (
191
104
problemid SERIAL PRIMARY KEY NOT NULL,
192
identifier VARCHAR UNIQUE NOT NULL,
196
CREATE TABLE worksheet (
197
worksheetid SERIAL PRIMARY KEY NOT NULL,
198
subject VARCHAR NOT NULL,
199
identifier VARCHAR NOT NULL,
202
UNIQUE (subject, identifier)
205
CREATE TABLE worksheet_problem (
206
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
207
problemid INT4 REFERENCES problem (problemid) NOT NULL,
209
PRIMARY KEY (worksheetid, problemid)
212
108
CREATE TABLE problem_tag (
213
109
problemid INT4 REFERENCES problem (problemid),
214
110
tag VARCHAR NOT NULL,
245
139
date TIMESTAMP NOT NULL,
246
140
attempt VARCHAR NOT NULL,
247
141
complete BOOLEAN NOT NULL,
248
active BOOLEAN NOT NULL DEFAULT true,
249
142
PRIMARY KEY (problemid,loginid,date)
252
CREATE TABLE problem_save (
253
problemid INT4 REFERENCES problem (problemid) NOT NULL,
254
loginid INT4 REFERENCES login (loginid) NOT NULL,
255
date TIMESTAMP NOT NULL,
256
text VARCHAR NOT NULL,
257
PRIMARY KEY (problemid,loginid)
260
145
CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
262
147
CREATE TABLE problem_attempt_breakdown (