113 lines
4.1 KiB
SQL
113 lines
4.1 KiB
SQL
drop schema if exists bank cascade;
|
||
create schema bank;
|
||
set search_path TO bank;
|
||
|
||
/************************************************************************
|
||
* Holder : table commune à tous les titulaires
|
||
* bigint : entier sur 64 bits
|
||
* primary key : clé primaire, identification unique de l'enregistrement
|
||
* generated always as identity : numéro incrément automatique 1, 2, 3 ...
|
||
* Le type est forcé aux 3 valeurs de l'énumération holder_type
|
||
* current_timestamp date et heure courante. Version moderne de now()
|
||
************************************************************************/
|
||
create type holder_type as enum ('BANK', 'PERSON', 'COMPANY');
|
||
|
||
create table holder (
|
||
"id" bigint primary key generated always as identity,
|
||
"type" holder_type not null,
|
||
"created_at" timestamp not null default current_timestamp
|
||
);
|
||
|
||
/************************************************************************
|
||
* Bank
|
||
* Liée par références à titulaire (holder) pas d'incrément automatique
|
||
* puisque c'est celui de titulaire
|
||
************************************************************************/
|
||
create table bank (
|
||
"id" bigint primary key references holder(id),
|
||
"name" text not null
|
||
);
|
||
|
||
/************************************************************************
|
||
* Person
|
||
* Liée par références à titulaire (holder) pas d'incrément automatique
|
||
* on delete cascade : Lors de la suppression du titualaire, person est
|
||
* supprimé aussi. Sans cela la suppression est interdite.
|
||
************************************************************************/
|
||
create table person (
|
||
"id" bigint primary key references holder(id) on delete cascade,
|
||
"firstname" text not null,
|
||
"lastname" text not null,
|
||
"birthdate" date not null check (birthdate <= current_date - interval '15 years')
|
||
);
|
||
|
||
/************************************************************************
|
||
* Company
|
||
*
|
||
************************************************************************/
|
||
create table company (
|
||
"id" bigint primary key references holder(id) on delete cascade,
|
||
"name" text not null,
|
||
"registration_number" text unique not null,
|
||
"created_at" date not null
|
||
);
|
||
|
||
/************************************************************************
|
||
* Company
|
||
*
|
||
************************************************************************/
|
||
create table currency (
|
||
"code" text primary key
|
||
);
|
||
|
||
/************************************************************************
|
||
* Exchange Rate
|
||
* La clé primaire est sur les deux colonnes currency_code et date
|
||
* Il n'y a qu'un seul taux de change par monnaie ET par jour
|
||
************************************************************************/
|
||
create table exchange_rate (
|
||
"currency_code" text references currency(code) on delete cascade,
|
||
"date" date ,
|
||
"rate" decimal not null,
|
||
primary key (currency_code, date)
|
||
);
|
||
|
||
/*
|
||
* Account
|
||
* La contrainte check (balance >= 0) empêche les soldes négatifs
|
||
*/
|
||
create table account (
|
||
"id" bigint primary key generated always as identity,
|
||
"opened_at" date not null default current_date,
|
||
"balance" numeric(18,6) not null default 0,
|
||
"currency_code" text not null references currency (code)
|
||
);
|
||
|
||
/*
|
||
* Account -> Holder
|
||
* Cette table établit la relation n–n entre account et holder.
|
||
* Un compte joint correspond donc à plusieurs lignes dans cette table.
|
||
* La contrainte share assure que les parts sont comprises entre 0 et 1.
|
||
*/
|
||
create table account_holder (
|
||
"account_id" int not null references account(id) on delete cascade,
|
||
"holder_id" int not null references holder(id) on delete cascade,
|
||
"share" decimal(4,3) not null default 1 check (share > 0 and share <= 1),
|
||
primary key (account_id, holder_id)
|
||
);
|
||
|
||
|
||
create table transaction (
|
||
"id" bigint primary key generated always as identity,
|
||
"transaction_date" timestamp not null default current_timestamp,
|
||
amount decimal not null check (amount > 0)
|
||
);
|
||
|
||
create table operation (
|
||
"id" bigint primary key generated always as identity,
|
||
"transaction_id" bigint not null references transaction(id),
|
||
"account_id" bigint not null references account(id),
|
||
amount decimal not null check (amount > 0),
|
||
direction text not null check (direction in ('DEBIT', 'CREDIT'))
|
||
);
|