17
20
fullname VARCHAR NOT NULL,
18
studentid VARCHAR -- may be null
21
studentid VARCHAR, -- may be null
28
CREATE TABLE subject (
29
subjectid SERIAL PRIMARY KEY NOT NULL,
30
subj_code VARCHAR UNIQUE NOT NULL,
31
subj_name VARCHAR NOT NULL,
32
subj_short_name VARCHAR UNIQUE NOT NULL,
36
CREATE TABLE semester (
37
semesterid SERIAL PRIMARY KEY NOT NULL,
38
year CHAR(4) NOT NULL,
39
semester CHAR(1) NOT NULL,
41
UNIQUE (year, semester)
44
CREATE OR REPLACE FUNCTION deactivate_semester_enrolments_update()
47
IF OLD.active = true AND NEW.active = false THEN
48
UPDATE enrolment SET active=false WHERE offeringid IN (
49
SELECT offeringid FROM offering WHERE offering.semesterid = NEW.semesterid);
55
CREATE TRIGGER deactivate_semester_enrolments
56
AFTER UPDATE ON semester
57
FOR EACH ROW EXECUTE PROCEDURE deactivate_semester_enrolments_update();
21
59
CREATE TABLE offering (
22
60
offeringid SERIAL PRIMARY KEY NOT NULL,
23
subj_name VARCHAR NOT NULL,
24
subj_code VARCHAR NOT NULL,
25
year CHAR(4) NOT NULL,
26
semester CHAR(1) NOT NULL,
61
subject INT4 REFERENCES subject (subjectid) NOT NULL,
62
semesterid INTEGER REFERENCES semester (semesterid) NOT NULL,
63
groups_student_permissions VARCHAR NOT NULL DEFAULT 'none',
64
CHECK (groups_student_permissions in ('none', 'invite', 'create')),
65
UNIQUE (subject, semesterid)
68
-- Projects and groups
69
-- -------------------
71
CREATE TABLE project_set (
72
projectsetid SERIAL PRIMARY KEY NOT NULL,
73
offeringid INTEGER REFERENCES offering (offeringid) NOT NULL,
74
max_students_per_group INTEGER NOT NULL DEFAULT 4
30
77
CREATE TABLE project (
31
78
projectid SERIAL PRIMARY KEY NOT NULL,
34
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
81
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
38
85
CREATE TABLE project_group (
39
86
groupnm VARCHAR NOT NULL,
40
87
groupid SERIAL PRIMARY KEY NOT NULL,
41
offeringid INT4 REFERENCES offering (offeringid),
88
projectsetid INTEGER REFERENCES project_set (projectsetid) NOT NULL,
43
90
createdby INT4 REFERENCES login (loginid) NOT NULL,
44
91
epoch TIMESTAMP NOT NULL,
45
UNIQUE (offeringid, groupnm)
92
UNIQUE (projectsetid, groupnm)
95
CREATE OR REPLACE FUNCTION check_group_namespacing_insertupdate()
100
SELECT offeringid INTO oid FROM project_set WHERE project_set.projectsetid = NEW.projectsetid;
101
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;
103
RAISE EXCEPTION ''a project group named % already exists in offering ID %'', NEW.groupnm, oid;
107
' LANGUAGE 'plpgsql';
109
CREATE TRIGGER check_group_namespacing
110
BEFORE INSERT OR UPDATE ON project_group
111
FOR EACH ROW EXECUTE PROCEDURE check_group_namespacing_insertupdate();
48
113
CREATE TABLE group_invitation (
49
114
loginid INT4 REFERENCES login (loginid) NOT NULL,
50
115
groupid INT4 REFERENCES project_group (groupid) NOT NULL,
71
134
special_supp_result VARCHAR,
136
active BOOL NOT NULL DEFAULT true,
73
137
PRIMARY KEY (loginid,offeringid)
140
CREATE OR REPLACE FUNCTION confirm_active_semester_insertupdate()
145
SELECT semester.active INTO active FROM offering, semester WHERE offeringid=NEW.offeringid AND semester.semesterid = offering.semesterid;
146
IF NOT active AND NEW.active = true THEN
147
RAISE EXCEPTION ''cannot have active enrolment for % in offering %, as the semester is inactive'', NEW.loginid, NEW.offeringid;
151
' LANGUAGE 'plpgsql';
153
CREATE TRIGGER confirm_active_semester
154
BEFORE INSERT OR UPDATE ON enrolment
155
FOR EACH ROW EXECUTE PROCEDURE confirm_active_semester_insertupdate();
76
157
CREATE TABLE assessed (
77
158
assessedid SERIAL PRIMARY KEY NOT NULL,
78
159
loginid INT4 REFERENCES login (loginid),
79
160
groupid INT4 REFERENCES project_group (groupid),
161
projectid INT4 REFERENCES project (projectid) NOT NULL,
80
162
-- exactly one of loginid and groupid must be non-null
81
163
CHECK ((loginid IS NOT NULL AND groupid IS NULL)
82
164
OR (loginid IS NULL AND groupid IS NOT NULL))
85
167
CREATE TABLE project_extension (
86
168
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
87
projectid INT4 REFERENCES project (projectid) NOT NULL,
88
169
deadline TIMESTAMP NOT NULL,
89
170
approver INT4 REFERENCES login (loginid) NOT NULL,
174
CREATE TABLE project_submission (
175
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
176
path VARCHAR NOT NULL,
177
revision INT4 NOT NULL
93
180
CREATE TABLE project_mark (
94
181
assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
95
projectid INT4 REFERENCES project (projectid) NOT NULL,
97
183
marker INT4 REFERENCES login (loginid) NOT NULL,
192
--TODO: Add in a field for the user-friendly identifier
104
193
CREATE TABLE problem (
105
problemid SERIAL PRIMARY KEY NOT NULL,
109
CREATE TABLE problem_tag (
110
problemid INT4 REFERENCES problem (problemid),
111
tag VARCHAR NOT NULL,
113
standard BOOLEAN NOT NULL,
114
added_by INT4 REFERENCES login (loginid) NOT NULL,
115
date TIMESTAMP NOT NULL,
116
PRIMARY KEY (problemid,added_by,tag)
119
CREATE TABLE problem_test_case (
120
problemid INT4 REFERENCES problem (problemid) NOT NULL,
121
testcaseid SERIAL UNIQUE NOT NULL,
124
visibility VARCHAR CHECK (visibility in ('public', 'protected', 'private'))
127
CREATE TABLE problem_test_case_tag (
128
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
129
tag VARCHAR NOT NULL,
131
standard BOOLEAN NOT NULL,
132
added_by INT4 REFERENCES login (loginid) NOT NULL,
133
date TIMESTAMP NOT NULL,
134
PRIMARY KEY (testcaseid,added_by,tag)
194
identifier VARCHAR PRIMARY KEY NOT NULL,
203
--TODO: Link worksheets to offerings
204
CREATE TABLE worksheet (
205
worksheetid SERIAL PRIMARY KEY NOT NULL,
206
subject VARCHAR NOT NULL,
207
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
208
identifier VARCHAR NOT NULL,
211
UNIQUE (subject, identifier)
214
CREATE TABLE worksheet_problem (
215
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
216
problemid TEXT REFERENCES problem (identifier) NOT NULL,
218
PRIMARY KEY (worksheetid, problemid)
137
221
CREATE TABLE problem_attempt (
138
problemid INT4 REFERENCES problem (problemid) NOT NULL,
222
problemid VARCHAR REFERENCES problem (identifier) NOT NULL,
139
223
loginid INT4 REFERENCES login (loginid) NOT NULL,
224
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
140
225
date TIMESTAMP NOT NULL,
141
226
attempt VARCHAR NOT NULL,
142
227
complete BOOLEAN NOT NULL,
228
active BOOLEAN NOT NULL DEFAULT true,
143
229
PRIMARY KEY (problemid,loginid,date)
232
CREATE TABLE problem_save (
233
problemid INT4 REFERENCES problem (problemid) NOT NULL,
234
loginid INT4 REFERENCES login (loginid) NOT NULL,
235
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
236
date TIMESTAMP NOT NULL,
237
text VARCHAR NOT NULL,
238
PRIMARY KEY (problemid,loginid)
146
241
CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
148
CREATE TABLE problem_attempt_breakdown (
149
problemid INT4 REFERENCES problem (problemid) NOT NULL,
150
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
151
loginid INT4 REFERENCES login (loginid) NOT NULL,
152
date TIMESTAMP NOT NULL,
156
CREATE TABLE problem_prerequisite (
157
parent INT4 REFERENCES problem (problemid) NOT NULL,
158
child INT4 REFERENCES problem (problemid) NOT NULL,
159
PRIMARY KEY (parent,child)
243
-- TABLES FOR EXERCISES IN DATABASE --
244
CREATE TABLE test_suite (
245
suiteid SERIAL NOT NULL,
246
problemid TEXT REFERENCES problem (identifier) NOT NULL,
249
PRIMARY KEY (problemid, suiteid)
252
CREATE TABLE test_case (
253
testid SERIAL NOT NULL,
254
suiteid INT4 REFERENCES test_suite (suiteid) NOT NULL,
262
PRIMARY KEY (testid, suiteid)