149 lines
3.7 KiB
SQL
149 lines
3.7 KiB
SQL
drop schema bank cascade;
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create schema bank;
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/*
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* Holder : table commune à tous les titulaires
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*/
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create table holder (
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"id" bigint primary key generated always as identity, -- identifiant unique
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"type" text not null check ("type" in ('PERSON', 'COMPANY')),
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"created_at" timestamp not null default now() -- date de création
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);
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/*
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* Person
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*/
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create table person (
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"id" bigint primary key references holder(id) on delete cascade,
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"firstname" text not null,
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"lastname" text not null,
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"birthdate" date not null
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);
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/*
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* Company
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*/
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create table company (
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"id" bigint primary key references holder(id) on delete cascade,
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"name" text not null,
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"registration_number" text unique not null,
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"created_at" date not null
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);
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/*
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* Insertion des données
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*/
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-- Création d’un titulaire de type personne physique
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insert into holder(type) values ('PERSON') returning id;
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-- Utilisons l'id qui est retourné (1)
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insert into person(id, firstname, lastname, birthdate)
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values (1, 'Françoise', 'Zanetti', '1995-04-12');
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-- Création d’un titulaire de type entreprise
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insert into holder(type) values ('COMPANY') returning id;
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-- Utilisons l'id qui est retourné (2)
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insert into company(id, name, registration_number, created_at)
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values (2, 'Boulangerie de Valorgue', 'FR19803269968', '2014-08-19');
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/*
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* Visualisation des données
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*/
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-- Liste de tous les titulaires
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create view list_holders as
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select h.id, h.type, h.created_at,
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p.firstname || ' ' || p.lastname as person,
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c.name as company
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from holder h
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left join person p on p.id = h.id
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left join company c on c.id = h.id
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order by h.id;
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/*
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* Suppression des données
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*/
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insert into holder(type) values ('PERSON') returning id;
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insert into person(id, firstname, lastname, birthdate)
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values (3, 'Lucas', 'Zanetti', '2002-05-09');
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select * from person;
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delete from holder where id = 3;
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-- La suppresion du titulaire entraine la suppression de l'individu
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select * from person;
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-- Contrainte sur l'âge du titulaire
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alter table person
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add constraint chk_person_minimum_age
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check (birthdate <= current_date - interval '15 years');
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insert into holder(type) values ('PERSON') returning id;
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insert into person(id, firstname, lastname, birthdate)
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values (3, 'Mattéo', 'Zanetti', '2012-12-12');
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/*
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* Account
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* Chaque compte a un numéro unique.
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* La contrainte check (balance >= 0) empêche les soldes négatifs
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*/
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create table account (
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id bigint primary key generated always as identity,
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number text unique not null,
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opened_at date not null default current_date,
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closed_at date,
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balance numeric(18,6) not null default 0 check (balance >= 0)
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);
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/*
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* Account -> Holder
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* Cette table établit la relation n–n entre account et holder.
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* Un compte joint correspond donc à plusieurs lignes dans cette table.
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* La contrainte share assure que les parts sont comprises entre 0 et 1.
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*/
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create table account_holder (
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account_id int not null references account(id) on delete cascade,
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holder_id int not null references holder(id) on delete cascade,
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share numeric(4,3) default 1 check (share > 0 and share <= 1),
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primary key (account_id, holder_id)
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);
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/*
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* Compte individuel pour Françoise Zanetti.
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*/
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insert into account (number)
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values ('AA') returning id;
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insert into account_holder
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values (1, 1);
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/*
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* Ajout d'un nouveau titulaire : Justin Hébrard né le 11/03/1993.
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*/
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insert into holder(type) values ('PERSON') returning id;
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insert into person(id, firstname, lastname, birthdate)
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values (5, 'Justin', 'Hébrard', '1993-03-11');
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/*
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* Compte joint pour Françoise et Justin.
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*/
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insert into account (number)
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values ('AB') returning id;
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insert into account_holder
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values (2, 1, 0.5);
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insert into account_holder
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values (2, 5, 0.5);
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