22
27
CREATE TABLE subject (
23
28
subjectid SERIAL PRIMARY KEY NOT NULL,
24
29
subj_code VARCHAR UNIQUE NOT NULL,
25
30
subj_name VARCHAR NOT NULL,
26
subj_short_name VARCHAR, -- may be null
31
subj_short_name VARCHAR UNIQUE NOT NULL,
35
CREATE TABLE semester (
36
semesterid SERIAL PRIMARY KEY NOT NULL,
37
year CHAR(4) NOT NULL,
38
semester CHAR(1) NOT NULL,
40
UNIQUE (year, semester)
43
CREATE OR REPLACE FUNCTION deactivate_semester_enrolments_update()
46
IF OLD.active = true AND NEW.active = false THEN
47
UPDATE enrolment SET active=false WHERE offeringid IN (
48
SELECT offeringid FROM offering WHERE offering.semesterid = NEW.semesterid);
54
CREATE TRIGGER deactivate_semester_enrolments
55
AFTER UPDATE ON semester
56
FOR EACH ROW EXECUTE PROCEDURE deactivate_semester_enrolments_update();
30
58
CREATE TABLE offering (
31
59
offeringid SERIAL PRIMARY KEY NOT NULL,
32
60
subject INT4 REFERENCES subject (subjectid) NOT NULL,
33
year CHAR(4) NOT NULL,
34
semester CHAR(1) NOT NULL
61
semesterid INTEGER REFERENCES semester (semesterid) NOT NULL,
62
groups_student_permissions VARCHAR NOT NULL DEFAULT 'none',
63
CHECK (groups_student_permissions in ('none', 'invite', 'create')),
64
UNIQUE (subject, semesterid)
67
-- Projects and groups
68
-- -------------------
70
CREATE TABLE project_set (
71
projectsetid SERIAL PRIMARY KEY NOT NULL,
72
offeringid INTEGER REFERENCES offering (offeringid) NOT NULL,
73
max_students_per_group INTEGER NOT NULL DEFAULT 4
37
76
CREATE TABLE project (
38
77
projectid SERIAL PRIMARY KEY NOT NULL,
41
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
80
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
45
84
CREATE TABLE project_group (
46
85
groupnm VARCHAR NOT NULL,
47
86
groupid SERIAL PRIMARY KEY NOT NULL,
48
offeringid INT4 REFERENCES offering (offeringid),
87
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
50
89
createdby INT4 REFERENCES login (loginid) NOT NULL,
51
90
epoch TIMESTAMP NOT NULL,
52
UNIQUE (offeringid, groupnm)
91
UNIQUE (projectsetid, groupnm)
94
CREATE OR REPLACE FUNCTION check_group_namespacing_insertupdate()
99
SELECT offeringid INTO oid FROM project_set WHERE project_set.projectsetid = NEW.projectsetid;
100
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;
102
RAISE EXCEPTION ''a project group named % already exists in offering ID %'', NEW.groupnm, oid;
106
' LANGUAGE 'plpgsql';
108
CREATE TRIGGER check_group_namespacing
109
BEFORE INSERT OR UPDATE ON project_group
110
FOR EACH ROW EXECUTE PROCEDURE check_group_namespacing_insertupdate();
55
112
CREATE TABLE group_invitation (
56
113
loginid INT4 REFERENCES login (loginid) NOT NULL,
57
114
groupid INT4 REFERENCES project_group (groupid) NOT NULL,
64
121
CREATE TABLE group_member (
65
122
loginid INT4 REFERENCES login (loginid),
66
123
groupid INT4 REFERENCES project_group (groupid),
67
projectid INT4 REFERENCES project (projectid),
68
UNIQUE (loginid,projectid),
69
124
PRIMARY KEY (loginid,groupid)
72
127
CREATE TABLE enrolment (
73
128
loginid INT4 REFERENCES login (loginid),
74
129
offeringid INT4 REFERENCES offering (offeringid),
130
role TEXT NOT NULL CHECK (role IN ('student', 'tutor',
131
'lecturer')) DEFAULT 'student',
76
133
special_result VARCHAR,
78
135
special_supp_result VARCHAR,
137
active BOOL NOT NULL DEFAULT true,
80
138
PRIMARY KEY (loginid,offeringid)
141
CREATE OR REPLACE FUNCTION confirm_active_semester_insertupdate()
146
SELECT semester.active INTO active FROM offering, semester WHERE offeringid=NEW.offeringid AND semester.semesterid = offering.semesterid;
147
IF NOT active AND NEW.active = true THEN
148
RAISE EXCEPTION ''cannot have active enrolment for % in offering %, as the semester is inactive'', NEW.loginid, NEW.offeringid;
152
' LANGUAGE 'plpgsql';
154
CREATE TRIGGER confirm_active_semester
155
BEFORE INSERT OR UPDATE ON enrolment
156
FOR EACH ROW EXECUTE PROCEDURE confirm_active_semester_insertupdate();
83
158
CREATE TABLE assessed (
84
159
assessedid SERIAL PRIMARY KEY NOT NULL,
85
160
loginid INT4 REFERENCES login (loginid),
86
161
groupid INT4 REFERENCES project_group (groupid),
162
projectid INT4 REFERENCES project (projectid) NOT NULL,
87
163
-- exactly one of loginid and groupid must be non-null
88
164
CHECK ((loginid IS NOT NULL AND groupid IS NULL)
89
165
OR (loginid IS NULL AND groupid IS NOT NULL))
118
CREATE TABLE problem (
119
problemid SERIAL PRIMARY KEY NOT NULL,
120
identifier VARCHAR UNIQUE NOT NULL,
193
CREATE TABLE exercise (
194
identifier TEXT PRIMARY KEY,
124
203
CREATE TABLE worksheet (
125
worksheetid SERIAL PRIMARY KEY NOT NULL,
126
subject VARCHAR NOT NULL,
127
identifier VARCHAR NOT NULL,
130
UNIQUE (subject, identifier)
133
CREATE TABLE worksheet_problem (
134
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
135
problemid INT4 REFERENCES problem (problemid) NOT NULL,
137
PRIMARY KEY (worksheetid, problemid)
140
CREATE TABLE problem_tag (
141
problemid INT4 REFERENCES problem (problemid),
142
tag VARCHAR NOT NULL,
144
standard BOOLEAN NOT NULL,
145
added_by INT4 REFERENCES login (loginid) NOT NULL,
146
date TIMESTAMP NOT NULL,
147
PRIMARY KEY (problemid,added_by,tag)
150
CREATE TABLE problem_test_case (
151
problemid INT4 REFERENCES problem (problemid) NOT NULL,
152
testcaseid SERIAL UNIQUE NOT NULL,
155
visibility VARCHAR CHECK (visibility in ('public', 'protected', 'private'))
158
CREATE TABLE problem_test_case_tag (
159
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
160
tag VARCHAR NOT NULL,
162
standard BOOLEAN NOT NULL,
163
added_by INT4 REFERENCES login (loginid) NOT NULL,
164
date TIMESTAMP NOT NULL,
165
PRIMARY KEY (testcaseid,added_by,tag)
168
CREATE TABLE problem_attempt (
169
problemid INT4 REFERENCES problem (problemid) NOT NULL,
204
worksheetid SERIAL PRIMARY KEY,
205
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
206
identifier TEXT NOT NULL,
209
assessable BOOLEAN NOT NULL,
210
seq_no INT4 NOT NULL,
211
format TEXT NOT NUll,
212
UNIQUE (offeringid, identifier)
215
CREATE TABLE worksheet_exercise (
216
ws_ex_id SERIAL PRIMARY KEY,
217
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
218
exerciseid TEXT REFERENCES exercise (identifier) NOT NULL,
219
seq_no INT4 NOT NULL,
220
active BOOLEAN NOT NULL DEFAULT true,
221
optional BOOLEAN NOT NULL,
222
UNIQUE (worksheetid, exerciseid)
225
CREATE TABLE exercise_attempt (
170
226
loginid INT4 REFERENCES login (loginid) NOT NULL,
227
ws_ex_id INT4 REFERENCES worksheet_exercise (ws_ex_id) NOT NULL,
171
228
date TIMESTAMP NOT NULL,
172
attempt VARCHAR NOT NULL,
229
attempt TEXT NOT NULL,
173
230
complete BOOLEAN NOT NULL,
174
PRIMARY KEY (problemid,loginid,date)
177
CREATE TABLE problem_save (
178
problemid INT4 REFERENCES problem (problemid) NOT NULL,
179
loginid INT4 REFERENCES login (loginid) NOT NULL,
180
date TIMESTAMP NOT NULL,
181
text VARCHAR NOT NULL,
182
PRIMARY KEY (problemid,loginid)
185
CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
187
CREATE TABLE problem_attempt_breakdown (
188
problemid INT4 REFERENCES problem (problemid) NOT NULL,
189
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
190
loginid INT4 REFERENCES login (loginid) NOT NULL,
191
date TIMESTAMP NOT NULL,
195
CREATE TABLE problem_prerequisite (
196
parent INT4 REFERENCES problem (problemid) NOT NULL,
197
child INT4 REFERENCES problem (problemid) NOT NULL,
198
PRIMARY KEY (parent,child)
231
active BOOLEAN NOT NULL DEFAULT true,
232
PRIMARY KEY (loginid, ws_ex_id, date)
235
CREATE TABLE exercise_save (
236
loginid INT4 REFERENCES login (loginid) NOT NULL,
237
ws_ex_id INT4 REFERENCES worksheet_exercise (ws_ex_id) NOT NULL,
238
date TIMESTAMP NOT NULL,
240
PRIMARY KEY (loginid, ws_ex_id)
243
CREATE TABLE test_suite (
244
suiteid SERIAL PRIMARY KEY,
245
exerciseid TEXT REFERENCES exercise (identifier) NOT NULL,
252
CREATE TABLE test_case (
253
testid SERIAL PRIMARY KEY,
254
suiteid INT4 REFERENCES test_suite (suiteid) NOT NULL,
261
CREATE TABLE suite_variable (
262
varid SERIAL PRIMARY KEY,
263
suiteid INT4 REFERENCES test_suite (suiteid) NOT NULL,
266
var_type TEXT NOT NULL,
270
CREATE TABLE test_case_part (
271
partid SERIAL PRIMARY KEY,
272
testid INT4 REFERENCES test_case (testid) NOT NULL,
273
part_type TEXT NOT NULL,