86 lines
2.4 KiB
SQL
86 lines
2.4 KiB
SQL
-- Process with:
|
|
|
|
-- sqlite lsr < create-db-subtag.sql
|
|
|
|
DROP TABLE Descriptions_languages;
|
|
DROP TABLE Descriptions_scripts;
|
|
DROP TABLE Descriptions_regions;
|
|
DROP TABLE Descriptions_variants;
|
|
DROP TABLE Descriptions;
|
|
DROP TABLE Prefixes;
|
|
DROP TABLE Languages;
|
|
DROP TABLE Extlangs;
|
|
DROP TABLE Scripts;
|
|
DROP TABLE Regions;
|
|
DROP TABLE Variants;
|
|
|
|
-- A few things to remember about SQLite:
|
|
--
|
|
-- 1) If you declare a column as "INTEGER PRIMARY KEY", it will
|
|
-- autoincrement (http://www.sqlite.org/faq.html#q1)
|
|
--
|
|
-- 2) Types and constraints are almost always ignored
|
|
-- (http://www.sqlite.org/datatype3.html or
|
|
-- http://www.sqlite.org/faq.html#q2)
|
|
|
|
CREATE TABLE Scripts (
|
|
id INTEGER PRIMARY KEY NOT NULL,
|
|
code TEXT UNIQUE NOT NULL,
|
|
added DATE,
|
|
comments TEXT);
|
|
|
|
CREATE TABLE Languages (
|
|
id INTEGER PRIMARY KEY NOT NULL,
|
|
code TEXT UNIQUE NOT NULL,
|
|
suppressscript TEXT REFERENCES Scripts(code),
|
|
preferredvalue TEXT, -- Yes, it should REFERENCES Languages(code), but
|
|
-- there is a chicken-and-egg problem.
|
|
added DATE,
|
|
comments TEXT);
|
|
|
|
CREATE TABLE Extlangs (
|
|
id SERIAL PRIMARY KEY NOT NULL,
|
|
code TEXT UNIQUE NOT NULL, -- TODO: a length and content constraint?
|
|
added DATE,
|
|
prefix TEXT, -- references Languages(code)? Can a prefix be longer (a language and a script, for instance)?
|
|
comments TEXT);
|
|
|
|
CREATE TABLE Regions (
|
|
id INTEGER PRIMARY KEY NOT NULL,
|
|
code TEXT UNIQUE NOT NULL,
|
|
added DATE,
|
|
deprecated DATE,
|
|
comments TEXT);
|
|
|
|
CREATE TABLE Variants (
|
|
id INTEGER PRIMARY KEY NOT NULL,
|
|
code TEXT UNIQUE NOT NULL,
|
|
added DATE,
|
|
comments TEXT);
|
|
|
|
CREATE TABLE Descriptions (
|
|
id INTEGER NOT NULL PRIMARY KEY,
|
|
description TEXT NOT NULL);
|
|
|
|
CREATE TABLE Descriptions_Languages (
|
|
description INTEGER NOT NULL REFERENCES Descriptions(id),
|
|
lang TEXT NOT NULL REFERENCES Languages(code));
|
|
|
|
CREATE TABLE Descriptions_Scripts (
|
|
description INTEGER NOT NULL REFERENCES Descriptions(id),
|
|
script TEXT NOT NULL REFERENCES Scripts(code));
|
|
|
|
CREATE TABLE Descriptions_Variants (
|
|
description INTEGER NOT NULL REFERENCES Descriptions(id),
|
|
variant TEXT NOT NULL REFERENCES Variants(code));
|
|
|
|
CREATE TABLE Descriptions_Regions (
|
|
description INTEGER NOT NULL REFERENCES Descriptions(id),
|
|
region TEXT NOT NULL REFERENCES Regions(code));
|
|
|
|
CREATE TABLE Prefixes (
|
|
variant TEXT NOT NULL REFERENCES Variants(code),
|
|
prefix TEXT NOT NULL REFERENCES Languages(code)
|
|
);
|
|
|