94 lines
2.5 KiB
MySQL
94 lines
2.5 KiB
MySQL
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drop schema if exists bank cascade;
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create schema bank;
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set search_path TO 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 type holder_type as enum ('BANK', 'PERSON', 'COMPANY');
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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" holder_type not null,
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"created_at" timestamp not null default current_timestamp -- date et heure de création
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);
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/*
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* Bank
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*/
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create table bank (
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"id" bigint primary key references holder(id), -- identifiant unique
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"name" text not null
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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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create table currency (
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"code" text primary key
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);
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create table exchange_rate (
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"currency_code" text references currency(code) on delete cascade,
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"date" date,
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"rate" decimal,
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primary key (currency_code, date)
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);
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/*
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* Account
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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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"opened_at" date not null default current_date,
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"balance" numeric(18,6) not null default 0 check (balance >= 0),
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"currency_code" text references currency (code)
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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" decimal(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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create table transaction (
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"id" bigint primary key generated always as identity,
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"transaction_date" timestamp default current_timestamp,
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amount decimal check (amount > 0)
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);
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create table operation (
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"id" bigint primary key generated always as identity,
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"transaction_id" bigint references transaction(id),
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"account_id" bigint references account(id),
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amount decimal check (amount > 0),
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direction text check (direction in ('DEBIT', 'CREDIT'))
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);
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