Shop basic information.

Column	Type	Constraint	Description
username	TEXT	PRIMARY KEY	Username to login and also PRIMARY KEY of each db table. Unchangeable.
password	TEXT	NOT NULL	Password to login to administration page.
zip_code	TEXT	NOT NULL	Zip code.
tel	TEXT	NOT NULL	Telephone number.
fax	TEXT		FAX number.
mail	TEXT	NOT NULL	Mail address.
url	TEXT	NOT NULL	Site URL.
salt	TEXT	NOT NULL	Salt to encrypt String.

CREATE TABLE shop(
username     TEXT,
password     TEXT     NOT NULL,
zip_code     TEXT     NOT NULL,
tel          TEXT     NOT NULL,
fax          TEXT,
mail         TEXT     NOT NULL,
url          TEXT     NOT NULL,
PRIMARY KEY(username)
);

Multilingualized name and abbreviated name of sxhop.

CREATE TABLE shop_content(
shop       TEXT,
lang       TEXT,
name       TEXT  NOT NULL,
name_abbr  TEXT  NOT NULL,
signature  TEXT,
PRIMARY KEY (shop, lang)
);