-- Add migration script here
CREATE TABLE accounts (
    account_id VARCHAR(10) PRIMARY KEY NOT NULL UNIQUE
);

CREATE TABLE caught_fish (
    id SERIAL PRIMARY KEY,
    account_id VARCHAR(10) NOT NULL,
    fish_id INTEGER NOT NULL,
    FOREIGN KEY (account_id) REFERENCES accounts (account_id) ON DELETE CASCADE ON UPDATE NO ACTION
);

CREATE INDEX fish_accounts ON caught_fish (account_id);