5
5
login VARCHAR UNIQUE NOT NULL,
7
7
state VARCHAR NOT NULL CHECK (state in ('no_agreement', 'pending',
8
'enabled', 'disabled')),
8
'enabled', 'disabled'))
9
DEFAULT 'no_agreement',
9
10
rolenm VARCHAR NOT NULL CHECK (rolenm in ('anyone', 'student',
11
12
'lecturer', 'admin')),
192
--TODO: Add in a field for the user-friendly identifier
192
193
CREATE TABLE problem (
193
problemid SERIAL PRIMARY KEY NOT NULL,
194
identifier VARCHAR UNIQUE NOT NULL,
194
identifier VARCHAR PRIMARY KEY NOT NULL,
203
--TODO: Link worksheets to offerings
198
204
CREATE TABLE worksheet (
199
205
worksheetid SERIAL PRIMARY KEY NOT NULL,
200
206
subject VARCHAR NOT NULL,
207
offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
201
208
identifier VARCHAR NOT NULL,
202
209
assessable BOOLEAN,
207
214
CREATE TABLE worksheet_problem (
208
215
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
209
problemid INT4 REFERENCES problem (problemid) NOT NULL,
216
problemid TEXT REFERENCES problem (identifier) NOT NULL,
210
217
optional BOOLEAN,
211
218
PRIMARY KEY (worksheetid, problemid)
214
CREATE TABLE problem_tag (
215
problemid INT4 REFERENCES problem (problemid),
216
tag VARCHAR NOT NULL,
218
standard BOOLEAN NOT NULL,
219
added_by INT4 REFERENCES login (loginid) NOT NULL,
220
date TIMESTAMP NOT NULL,
221
PRIMARY KEY (problemid,added_by,tag)
224
CREATE TABLE problem_test_case (
225
problemid INT4 REFERENCES problem (problemid) NOT NULL,
226
testcaseid SERIAL UNIQUE NOT NULL,
229
visibility VARCHAR CHECK (visibility in ('public', 'protected', 'private'))
232
CREATE TABLE problem_test_case_tag (
233
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
234
tag VARCHAR NOT NULL,
236
standard BOOLEAN NOT NULL,
237
added_by INT4 REFERENCES login (loginid) NOT NULL,
238
date TIMESTAMP NOT NULL,
239
PRIMARY KEY (testcaseid,added_by,tag)
242
221
CREATE TABLE problem_attempt (
243
problemid INT4 REFERENCES problem (problemid) NOT NULL,
222
problemid VARCHAR REFERENCES problem (identifier) NOT NULL,
244
223
loginid INT4 REFERENCES login (loginid) NOT NULL,
224
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
245
225
date TIMESTAMP NOT NULL,
246
226
attempt VARCHAR NOT NULL,
247
227
complete BOOLEAN NOT NULL,
252
232
CREATE TABLE problem_save (
253
233
problemid INT4 REFERENCES problem (problemid) NOT NULL,
254
234
loginid INT4 REFERENCES login (loginid) NOT NULL,
235
worksheetid INT4 REFERENCES worksheet (worksheetid) NOT NULL,
255
236
date TIMESTAMP NOT NULL,
256
237
text VARCHAR NOT NULL,
257
238
PRIMARY KEY (problemid,loginid)
260
241
CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
262
CREATE TABLE problem_attempt_breakdown (
263
problemid INT4 REFERENCES problem (problemid) NOT NULL,
264
testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
265
loginid INT4 REFERENCES login (loginid) NOT NULL,
266
date TIMESTAMP NOT NULL,
270
CREATE TABLE problem_prerequisite (
271
parent INT4 REFERENCES problem (problemid) NOT NULL,
272
child INT4 REFERENCES problem (problemid) NOT NULL,
273
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)