1
DROP TABLE users CASCADE;
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3
login VARCHAR UNIQUE NOT NULL,
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4
loginid SERIAL PRIMARY KEY NOT NULL,
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7
studentid VARCHAR -- may be null
11
CREATE TABLE offering (
10
DROP TABLE offerings CASCADE;
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CREATE TABLE offerings (
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offeringid SERIAL PRIMARY KEY NOT NULL,
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subj_name VARCHAR NOT NULL,
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subj_code VARCHAR NOT NULL,
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year CHAR(4) NOT NULL,
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semester CHAR(1) NOT NULL,
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CREATE TABLE project (
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projectid SERIAL PRIMARY KEY NOT NULL,
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offeringid INT4 REFERENCES offering (offeringid) NOT NULL,
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CREATE TABLE project_group (
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groupnm VARCHAR NOT NULL,
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DROP TABLE groups CASCADE;
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groupnm VARCHAR NOT NULL,
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groupid SERIAL PRIMARY KEY NOT NULL,
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offeringid INT4 REFERENCES offering (offeringid),
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offeringid INT4 REFERENCES offerings (offeringid),
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createdby INT4 REFERENCES login (loginid) NOT NULL,
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epoch TIMESTAMP NOT NULL,
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25
UNIQUE (offeringid, groupnm)
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CREATE TABLE group_invitation (
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loginid INT4 REFERENCES login (loginid) NOT NULL,
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groupid INT4 REFERENCES project_group (groupid) NOT NULL,
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inviter INT4 REFERENCES login (loginid) NOT NULL,
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invited TIMESTAMP NOT NULL,
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DROP TABLE group_invitations CASCADE;
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CREATE TABLE group_invitations (
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loginid INT4 REFERENCES users (loginid),
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groupid INT4 REFERENCES groups (groupid),
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UNIQUE (loginid,groupid)
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CREATE TABLE group_member (
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loginid INT4 REFERENCES login (loginid),
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groupid INT4 REFERENCES project_group (groupid),
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projectid INT4 REFERENCES project (projectid),
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DROP TABLE group_members CASCADE;
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CREATE TABLE group_members (
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loginid INT4 REFERENCES users (loginid),
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groupid INT4 REFERENCES groups (groupid),
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projectid INT4 REFERENCES projects (projectid),
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UNIQUE (loginid,projectid),
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PRIMARY KEY (loginid,groupid)
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DROP TABLE enrolment CASCADE;
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45
CREATE TABLE enrolment (
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loginid INT4 REFERENCES login (loginid),
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offeringid INT4 REFERENCES offering (offeringid),
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loginid INT4 REFERENCES users (loginid),
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offeringid INT4 REFERENCES offerings (offeringid),
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special_result VARCHAR,
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special_supp_result VARCHAR,
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51
PRIMARY KEY (loginid,offeringid)
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CREATE TABLE assessed (
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assessedid SERIAL PRIMARY KEY NOT NULL,
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loginid INT4 REFERENCES login (loginid),
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groupid INT4 REFERENCES project_group (groupid),
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-- exactly one of loginid and groupid must be non-null
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CHECK ((loginid IS NOT NULL AND groupid IS NULL)
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OR (loginid IS NULL AND groupid IS NOT NULL))
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DROP TABLE roles CASCADE;
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loginid INT4 PRIMARY KEY REFERENCES users (loginid),
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DROP TABLE projects CASCADE;
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CREATE TABLE projects (
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projectid SERIAL PRIMARY KEY NOT NULL,
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offeringid INT4 REFERENCES offerings (offeringid) NOT NULL,
69
DROP TABLE project_extension CASCADE;
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70
CREATE TABLE project_extension (
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assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
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projectid INT4 REFERENCES project (projectid) NOT NULL,
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loginid INT4 REFERENCES users (loginid),
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groupid INT4 REFERENCES groups (groupid),
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projectid INT4 REFERENCES projects (projectid) NOT NULL,
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deadline TIMESTAMP NOT NULL,
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approver INT4 REFERENCES login (loginid) NOT NULL,
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approver INT4 REFERENCES users (loginid) NOT NULL,
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-- exactly one of loginid and groupid must be non-null
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CHECK ((loginid IS NOT NULL AND groupid IS NULL)
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OR (loginid IS NULL AND groupid IS NOT NULL))
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DROP TABLE project_mark CASCADE;
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CREATE TABLE project_mark (
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assessedid INT4 REFERENCES assessed (assessedid) NOT NULL,
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projectid INT4 REFERENCES project (projectid) NOT NULL,
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loginid INT4 REFERENCES users (loginid),
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groupid INT4 REFERENCES groups (groupid),
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projectid INT4 REFERENCES projects (projectid) NOT NULL,
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marker INT4 REFERENCES login (loginid) NOT NULL,
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marker INT4 REFERENCES users (loginid) NOT NULL,
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-- exactly one of loginid and groupid must be non-null
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CHECK ((loginid IS NOT NULL AND groupid IS NULL)
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OR (loginid IS NULL AND groupid IS NOT NULL))
98
DROP TABLE problem CASCADE;
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99
CREATE TABLE problem (
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problemid SERIAL PRIMARY KEY NOT NULL,
99
CREATE TABLE problem_tag (
100
problemid INT4 REFERENCES problem (problemid),
104
DROP TABLE problem_tags CASCADE;
105
CREATE TABLE problem_tags (
106
problemid INT4 REFERENCES tutorial_problem (problemid),
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107
tag VARCHAR NOT NULL,
103
standard BOOLEAN NOT NULL,
104
added_by INT4 REFERENCES login (loginid) NOT NULL,
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added_by INT4 REFERENCES users (loginid) NOT NULL,
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109
date TIMESTAMP NOT NULL,
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110
PRIMARY KEY (problemid,added_by,tag)
113
DROP TABLE problem_test_case CASCADE;
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114
CREATE TABLE problem_test_case (
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problemid INT4 REFERENCES problem (problemid) NOT NULL,
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testcaseid SERIAL UNIQUE NOT NULL,
114
119
visibility VARCHAR CHECK (visibility in ('public', 'protected', 'private'))
117
CREATE TABLE problem_test_case_tag (
122
DROP TABLE problem_test_case_tags CASCADE;
123
CREATE TABLE problem_test_case_tags (
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testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
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tag VARCHAR NOT NULL,
120
126
description VARCHAR,
121
standard BOOLEAN NOT NULL,
122
added_by INT4 REFERENCES login (loginid) NOT NULL,
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added_by INT4 REFERENCES users (loginid) NOT NULL,
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date TIMESTAMP NOT NULL,
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129
PRIMARY KEY (testcaseid,added_by,tag)
132
DROP TABLE problem_attempt CASCADE;
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133
CREATE TABLE problem_attempt (
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problemid INT4 REFERENCES problem (problemid) NOT NULL,
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loginid INT4 REFERENCES login (loginid) NOT NULL,
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loginid INT4 REFERENCES users (loginid) NOT NULL,
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136
date TIMESTAMP NOT NULL,
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137
attempt VARCHAR NOT NULL,
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138
complete BOOLEAN NOT NULL,
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139
PRIMARY KEY (problemid,loginid,date)
142
DROP INDEX problem_attempt_index;
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CREATE INDEX problem_attempt_index ON problem_attempt (problemid, loginid);
145
DROP TABLE problem_attempt_breakdown CASCADE;
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146
CREATE TABLE problem_attempt_breakdown (
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problemid INT4 REFERENCES problem (problemid) NOT NULL,
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testcaseid INT4 REFERENCES problem_test_case (testcaseid) NOT NULL,
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loginid INT4 REFERENCES login (loginid) NOT NULL,
149
loginid INT4 REFERENCES users (loginid) NOT NULL,
142
150
date TIMESTAMP NOT NULL,
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CREATE TABLE problem_prerequisite (
154
DROP TABLE problem_prerequisites CASCADE;
155
CREATE TABLE problem_prerequisites (
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parent INT4 REFERENCES problem (problemid) NOT NULL,
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157
child INT4 REFERENCES problem (problemid) NOT NULL,
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PRIMARY KEY (parent,child)