| 1 | -- REFERENCE TABLES
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| 2 |
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| 3 |
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| 4 | CREATE TABLE public.election_type (
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| 5 | election_type_id int8 NOT NULL,
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| 6 | type_name varchar(60) NOT NULL,
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| 7 | CONSTRAINT election_type_pkey PRIMARY KEY (election_type_id),
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| 8 | CONSTRAINT uk_election_type_name UNIQUE (type_name)
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| 9 | );
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| 10 |
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| 11 |
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| 12 | CREATE TABLE public.region_type (
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| 13 | region_type_id int8 NOT NULL,
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| 14 | "name" varchar(50) NOT NULL,
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| 15 | description text NULL,
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| 16 | CONSTRAINT region_type_pkey PRIMARY KEY (region_type_id),
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| 17 | CONSTRAINT uk_region_type_name UNIQUE (name)
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| 18 | );
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| 19 |
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| 20 |
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| 21 |
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| 22 | CREATE TABLE public.winner_method (
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| 23 | method_id int8 NOT NULL,
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| 24 | method_name varchar(255) NOT NULL,
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| 25 | CONSTRAINT uk_winner_method_name UNIQUE (method_name),
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| 26 | CONSTRAINT winner_method_pkey PRIMARY KEY (method_id)
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| 27 | );
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| 28 |
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| 29 |
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| 30 |
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| 31 | -- REGION (self-referencing hierarchy)
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| 32 |
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| 33 | CREATE TABLE public.region (
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| 34 | region_id int8 NOT NULL,
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| 35 | "name" varchar(100) NOT NULL,
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| 36 | region_type_id int8 NOT NULL,
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| 37 | parent_region_id int8 NULL,
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| 38 | CONSTRAINT region_pkey PRIMARY KEY (region_id),
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| 39 | CONSTRAINT uk_region_name UNIQUE (name, parent_region_id),
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| 40 | CONSTRAINT fk_region_parent FOREIGN KEY (parent_region_id)
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| 41 | REFERENCES public.region(region_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 42 | CONSTRAINT fk_region_type FOREIGN KEY (region_type_id)
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| 43 | REFERENCES public.region_type(region_type_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 44 | );
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| 45 |
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| 46 |
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| 47 | -- ELECTION
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| 48 |
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| 49 |
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| 50 | CREATE TABLE public.election (
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| 51 | election_id int8 NOT NULL,
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| 52 | "name" varchar(100) NOT NULL,
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| 53 | election_type_id int8 NOT NULL,
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| 54 | region_id int8 NOT NULL,
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| 55 | election_date date NOT NULL,
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| 56 | description text NULL,
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| 57 | status int2 NOT NULL DEFAULT 1,
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| 58 | winner_method_id int8 NOT NULL,
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| 59 | total_seats int4 NULL,
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| 60 | CONSTRAINT chk_total_seats CHECK ((total_seats IS NULL) OR (total_seats > 0)),
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| 61 | CONSTRAINT election_pkey PRIMARY KEY (election_id),
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| 62 | CONSTRAINT election_status_check CHECK (status = ANY (ARRAY[0, 1])),
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| 63 | CONSTRAINT uk_election_name UNIQUE (name),
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| 64 | CONSTRAINT fk_election_region FOREIGN KEY (region_id)
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| 65 | REFERENCES public.region(region_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 66 | CONSTRAINT fk_election_type FOREIGN KEY (election_type_id)
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| 67 | REFERENCES public.election_type(election_type_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 68 | CONSTRAINT fk_election_winner_method FOREIGN KEY (winner_method_id)
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| 69 | REFERENCES public.winner_method(method_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 70 | );
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| 71 |
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| 72 |
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| 73 | CREATE TABLE public.election_cycle (
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| 74 | cycle_id int8 NOT NULL,
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| 75 | election_id int8 NOT NULL,
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| 76 | round_number int4 NOT NULL,
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| 77 | CONSTRAINT election_cycle_pkey PRIMARY KEY (cycle_id),
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| 78 | CONSTRAINT uk_cycle UNIQUE (election_id, round_number),
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| 79 | CONSTRAINT fk_cycle_election FOREIGN KEY (election_id)
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| 80 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 81 | );
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| 82 |
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| 83 |
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| 84 | CREATE TABLE public.electoral_district (
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| 85 | district_id int8 NOT NULL,
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| 86 | election_id int8 NOT NULL,
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| 87 | region_id int8 NOT NULL,
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| 88 | seats_available int4 NULL,
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| 89 | CONSTRAINT chk_seats CHECK ((seats_available IS NULL) OR (seats_available > 0)),
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| 90 | CONSTRAINT electoral_district_pkey PRIMARY KEY (district_id),
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| 91 | CONSTRAINT uk_district UNIQUE (election_id, region_id),
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| 92 | CONSTRAINT fk_district_election FOREIGN KEY (election_id)
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| 93 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 94 | CONSTRAINT fk_district_region FOREIGN KEY (region_id)
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| 95 | REFERENCES public.region(region_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 96 | );
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| 97 |
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| 98 |
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| 99 | -- PARTIES, COALITIONS, POLITICAL ENTITIES
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| 100 |
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| 101 |
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| 102 | CREATE TABLE public.party_coalition (
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| 103 | coalition_id int8 NOT NULL,
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| 104 | "name" varchar(100) NOT NULL,
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| 105 | election_id int8 NOT NULL,
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| 106 | CONSTRAINT party_coalition_pkey PRIMARY KEY (coalition_id),
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| 107 | CONSTRAINT uk_coalition_name UNIQUE (name),
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| 108 | CONSTRAINT fk_coalition_election FOREIGN KEY (election_id)
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| 109 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 110 | );
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| 111 |
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| 112 |
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| 113 | CREATE TABLE public.party_leader (
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| 114 | leader_id int8 NOT NULL,
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| 115 | person_id int8 NOT NULL,
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| 116 | CONSTRAINT party_leader_pkey PRIMARY KEY (leader_id),
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| 117 | CONSTRAINT uk_party_leader_person UNIQUE (person_id),
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| 118 | CONSTRAINT fk_party_leader_person FOREIGN KEY (person_id)
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| 119 | REFERENCES public.person(person_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 120 | );
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| 121 |
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| 122 |
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| 123 | CREATE TABLE public.political_party (
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| 124 | party_id int8 NOT NULL,
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| 125 | "name" varchar(100) NOT NULL,
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| 126 | abbreviation varchar(20) NULL,
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| 127 | description text NULL,
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| 128 | founded_year int4 NULL,
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| 129 | ideology text NULL,
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| 130 | leader_id int8 NULL,
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| 131 | parent_party_id int8 NULL,
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| 132 | CONSTRAINT political_party_pkey PRIMARY KEY (party_id),
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| 133 | CONSTRAINT uk_party_name UNIQUE (name),
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| 134 | CONSTRAINT fk_party_leader FOREIGN KEY (leader_id)
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| 135 | REFERENCES public.party_leader(leader_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 136 | CONSTRAINT fk_party_parent FOREIGN KEY (parent_party_id)
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| 137 | REFERENCES public.political_party(party_id) ON DELETE SET NULL ON UPDATE CASCADE
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| 138 | );
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| 139 |
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| 140 |
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| 141 | CREATE TABLE public.coalition_member (
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| 142 | coalition_member_id int8 NOT NULL,
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| 143 | coalition_id int8 NOT NULL,
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| 144 | party_id int8 NOT NULL,
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| 145 | CONSTRAINT coalition_member_pkey PRIMARY KEY (coalition_member_id),
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| 146 | CONSTRAINT uk_coalition_member UNIQUE (coalition_id, party_id),
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| 147 | CONSTRAINT fk_coalition_member_coalition FOREIGN KEY (coalition_id)
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| 148 | REFERENCES public.party_coalition(coalition_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 149 | CONSTRAINT fk_coalition_member_party FOREIGN KEY (party_id)
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| 150 | REFERENCES public.political_party(party_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 151 | );
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| 152 |
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| 153 |
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| 154 | CREATE TABLE public.political_entity (
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| 155 | entity_id int8 NOT NULL,
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| 156 | "name" varchar(100) NOT NULL,
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| 157 | "type" varchar(20) NULL,
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| 158 | party_id int8 NULL,
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| 159 | coalition_id int8 NULL,
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| 160 | candidate_id int8 NULL,
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| 161 | is_independent bool NOT NULL DEFAULT false,
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| 162 | CONSTRAINT chk_entity_type CHECK (
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| 163 | ((party_id IS NOT NULL) AND (coalition_id IS NULL) AND (is_independent = false))
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| 164 | OR ((party_id IS NULL) AND (coalition_id IS NOT NULL) AND (is_independent = false))
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| 165 | OR ((party_id IS NULL) AND (coalition_id IS NULL) AND (is_independent = true) AND (candidate_id IS NOT NULL))
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| 166 | ),
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| 167 | CONSTRAINT political_entity_pkey PRIMARY KEY (entity_id),
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| 168 | CONSTRAINT uk_entity_name UNIQUE (name),
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| 169 | CONSTRAINT fk_entity_candidate FOREIGN KEY (candidate_id)
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| 170 | REFERENCES public.candidate(candidate_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 171 | CONSTRAINT fk_entity_coalition FOREIGN KEY (coalition_id)
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| 172 | REFERENCES public.party_coalition(coalition_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 173 | CONSTRAINT fk_entity_party FOREIGN KEY (party_id)
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| 174 | REFERENCES public.political_party(party_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 175 | );
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| 176 |
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| 177 |
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| 178 | -- PERSON, VOTER, CANDIDATE
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| 179 |
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| 180 |
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| 181 | CREATE TABLE public.person (
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| 182 | person_id int8 NOT NULL,
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| 183 | "name" varchar(50) NOT NULL,
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| 184 | surname varchar(50) NOT NULL,
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| 185 | date_of_birth date NOT NULL,
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| 186 | gender bpchar(1) NOT NULL,
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| 187 | municipality_id int8 NULL,
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| 188 | CONSTRAINT person_gender_check CHECK (gender = ANY (ARRAY['M'::bpchar, 'F'::bpchar, 'O'::bpchar])),
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| 189 | CONSTRAINT person_pkey PRIMARY KEY (person_id),
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| 190 | CONSTRAINT uk_person UNIQUE (name, surname, date_of_birth),
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| 191 | CONSTRAINT fk_person_municipality FOREIGN KEY (municipality_id)
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| 192 | REFERENCES public.region(region_id)
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| 193 | );
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| 194 |
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| 195 |
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| 196 | CREATE TABLE public.candidate (
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| 197 | candidate_id int8 NOT NULL,
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| 198 | person_id int8 NOT NULL,
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| 199 | CONSTRAINT candidate_pkey PRIMARY KEY (candidate_id),
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| 200 | CONSTRAINT fk_candidate_person FOREIGN KEY (person_id)
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| 201 | REFERENCES public.person(person_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 202 | );
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| 203 |
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| 204 |
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| 205 | CREATE TABLE public.candidate_party (
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| 206 | candidate_party_id int8 NOT NULL,
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| 207 | candidate_id int8 NOT NULL,
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| 208 | party_id int8 NOT NULL,
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| 209 | election_id int8 NOT NULL,
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| 210 | CONSTRAINT candidate_party_pkey PRIMARY KEY (candidate_party_id),
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| 211 | CONSTRAINT uk_candidate_party UNIQUE (candidate_id, party_id, election_id),
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| 212 | CONSTRAINT fk_cp_candidate FOREIGN KEY (candidate_id)
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| 213 | REFERENCES public.candidate(candidate_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 214 | CONSTRAINT fk_cp_election FOREIGN KEY (election_id)
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| 215 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 216 | CONSTRAINT fk_cp_party FOREIGN KEY (party_id)
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| 217 | REFERENCES public.political_party(party_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 218 | );
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| 219 |
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| 220 |
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| 221 | CREATE TABLE public.candidate_list (
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| 222 | list_id int8 NOT NULL,
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| 223 | election_id int8 NOT NULL,
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| 224 | entity_id int8 NOT NULL,
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| 225 | CONSTRAINT candidate_list_pkey PRIMARY KEY (list_id),
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| 226 | CONSTRAINT uk_candidate_list UNIQUE (election_id, entity_id),
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| 227 | CONSTRAINT fk_candidate_list_election FOREIGN KEY (election_id)
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| 228 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 229 | CONSTRAINT fk_candidate_list_entity FOREIGN KEY (entity_id)
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| 230 | REFERENCES public.political_entity(entity_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 231 | );
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| 232 |
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| 233 |
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| 234 | CREATE TABLE public.candidate_list_item (
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| 235 | list_item_id int8 NOT NULL,
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| 236 | list_id int8 NOT NULL,
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| 237 | candidate_id int8 NOT NULL,
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| 238 | "position" int4 NOT NULL,
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| 239 | CONSTRAINT candidate_list_item_pkey PRIMARY KEY (list_item_id),
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| 240 | CONSTRAINT uk_list_item_candidate UNIQUE (list_id, candidate_id),
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| 241 | CONSTRAINT uk_list_item_position UNIQUE (list_id, "position"),
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| 242 | CONSTRAINT fk_list_item_candidate FOREIGN KEY (candidate_id)
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| 243 | REFERENCES public.candidate(candidate_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 244 | CONSTRAINT fk_list_item_list FOREIGN KEY (list_id)
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| 245 | REFERENCES public.candidate_list(list_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 246 | );
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| 247 |
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| 248 |
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| 249 | -- POLLING STATIONS AND VOTERS
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| 250 |
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| 251 |
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| 252 | CREATE TABLE public.polling_station (
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| 253 | station_id int8 NOT NULL,
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| 254 | "name" varchar(100) NOT NULL,
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| 255 | municipality_id int8 NOT NULL,
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| 256 | address text NULL,
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| 257 | registered_voter int4 NULL,
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| 258 | voting_object varchar(255) NULL,
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| 259 | CONSTRAINT polling_station_pkey PRIMARY KEY (station_id),
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| 260 | CONSTRAINT uk_station_name_municipality UNIQUE (name, municipality_id),
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| 261 | CONSTRAINT fk_station_municipality FOREIGN KEY (municipality_id)
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| 262 | REFERENCES public.region(region_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 263 | );
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| 264 |
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| 265 |
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| 266 | CREATE TABLE public.station_election (
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| 267 | station_election_id int8 NOT NULL,
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| 268 | station_id int8 NOT NULL,
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| 269 | election_id int8 NOT NULL,
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| 270 | CONSTRAINT station_election_pkey PRIMARY KEY (station_election_id),
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| 271 | CONSTRAINT uk_se UNIQUE (station_id, election_id),
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| 272 | CONSTRAINT fk_se_election FOREIGN KEY (election_id)
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| 273 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 274 | CONSTRAINT fk_se_station FOREIGN KEY (station_id)
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| 275 | REFERENCES public.polling_station(station_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 276 | );
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| 277 |
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| 278 |
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| 279 | CREATE TABLE public.voter (
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| 280 | voter_id int8 NOT NULL,
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| 281 | person_id int8 NOT NULL,
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| 282 | station_id int8 NOT NULL,
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| 283 | CONSTRAINT idx_voter_person_id UNIQUE (person_id),
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| 284 | CONSTRAINT voter_pkey PRIMARY KEY (voter_id),
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| 285 | CONSTRAINT fk_voter_person FOREIGN KEY (person_id)
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| 286 | REFERENCES public.person(person_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 287 | CONSTRAINT fk_voter_station FOREIGN KEY (station_id)
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| 288 | REFERENCES public.polling_station(station_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 289 | );
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| 290 |
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| 291 |
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| 292 | CREATE TABLE public.voter_election (
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| 293 | voter_election_id int8 NOT NULL,
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| 294 | voter_id int8 NOT NULL,
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| 295 | station_id int8 NOT NULL,
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| 296 | election_id int8 NOT NULL,
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| 297 | checkin_timestamp timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
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| 298 | CONSTRAINT uk_ve_voter_election UNIQUE (voter_id, election_id),
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| 299 | CONSTRAINT voter_election_pkey PRIMARY KEY (voter_election_id),
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| 300 | CONSTRAINT fk_ve_election FOREIGN KEY (election_id)
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| 301 | REFERENCES public.election(election_id),
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| 302 | CONSTRAINT fk_ve_station FOREIGN KEY (station_id)
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| 303 | REFERENCES public.polling_station(station_id),
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| 304 | CONSTRAINT fk_ve_voter FOREIGN KEY (voter_id)
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| 305 | REFERENCES public.voter(voter_id)
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| 306 | );
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| 307 |
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| 308 |
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| 309 | -- ELECTION PARTICIPANTS AND VOTE RESULTS
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| 310 |
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| 311 | CREATE TABLE public.election_participant (
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| 312 | participant_id int8 NOT NULL,
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| 313 | district_id int8 NOT NULL,
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| 314 | entity_id int8 NOT NULL,
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| 315 | CONSTRAINT election_participant_pkey PRIMARY KEY (participant_id),
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| 316 | CONSTRAINT uk_participant UNIQUE (district_id, entity_id),
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| 317 | CONSTRAINT fk_participant_district FOREIGN KEY (district_id)
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| 318 | REFERENCES public.electoral_district(district_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 319 | CONSTRAINT fk_participant_entity FOREIGN KEY (entity_id)
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| 320 | REFERENCES public.political_entity(entity_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 321 | );
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| 322 |
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| 323 |
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| 324 | CREATE TABLE public.vote_result (
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| 325 | result_id int8 NOT NULL,
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| 326 | election_id int8 NOT NULL,
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| 327 | station_id int8 NOT NULL,
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| 328 | entity_id int8 NOT NULL,
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| 329 | candidate_id int8 NULL,
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| 330 | votes int4 NOT NULL,
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| 331 | CONSTRAINT uk_vote_result UNIQUE (election_id, entity_id, station_id, candidate_id),
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| 332 | CONSTRAINT vote_result_pkey PRIMARY KEY (result_id),
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| 333 | CONSTRAINT vote_result_votes_check CHECK (votes >= 0),
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| 334 | CONSTRAINT fk_vr_candidate FOREIGN KEY (candidate_id)
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| 335 | REFERENCES public.candidate(candidate_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 336 | CONSTRAINT fk_vr_election FOREIGN KEY (election_id)
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| 337 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 338 | CONSTRAINT fk_vr_entity FOREIGN KEY (entity_id)
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| 339 | REFERENCES public.political_entity(entity_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 340 | CONSTRAINT fk_vr_station FOREIGN KEY (station_id)
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| 341 | REFERENCES public.polling_station(station_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 342 | CONSTRAINT fk_vr_station_election FOREIGN KEY (station_id, election_id)
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| 343 | REFERENCES public.station_election(station_id, election_id)
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| 344 | );
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| 345 |
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| 346 |
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| 347 | -- BALLOT
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| 348 |
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| 349 | CREATE TABLE public.ballot (
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| 350 | ballot_id int8 NOT NULL GENERATED ALWAYS AS IDENTITY,
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| 351 | election_id int8 NOT NULL,
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| 352 | station_id int8 NOT NULL,
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| 353 | entity_id int8 NULL,
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| 354 | candidate_id int8 NULL,
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| 355 | is_valid bool NOT NULL DEFAULT true,
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| 356 | ballot_timestamp timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
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| 357 | CONSTRAINT ballot_pkey PRIMARY KEY (ballot_id),
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| 358 | CONSTRAINT chk_ballot_validity CHECK (
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| 359 | (is_valid = false) OR (entity_id IS NOT NULL) OR (candidate_id IS NOT NULL)
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| 360 | ),
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| 361 | CONSTRAINT fk_ballot_candidate FOREIGN KEY (candidate_id)
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| 362 | REFERENCES public.candidate(candidate_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 363 | CONSTRAINT fk_ballot_election FOREIGN KEY (election_id)
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| 364 | REFERENCES public.election(election_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 365 | CONSTRAINT fk_ballot_entity FOREIGN KEY (entity_id)
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| 366 | REFERENCES public.political_entity(entity_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 367 | CONSTRAINT fk_ballot_station FOREIGN KEY (station_id)
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| 368 | REFERENCES public.polling_station(station_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 369 | );
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| 370 |
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| 371 |
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