moved sql migration.

migrations/sql/create_tables_001.sql

@@ -0,0 +1,82 @@
+CREATE TABLE IF NOT EXISTS users
+(
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    name          TEXT NOT NULL,
+    public_key    TEXT NOT NULL,
+    creation_time DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS security_types
+(
+    name TEXT PRIMARY KEY
+) STRICT;
+
+INSERT INTO security_types(name)
+VALUES ('currency'),
+       ('bond');
+
+CREATE TABLE IF NOT EXISTS securities
+(
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    security_type TEXT NOT NULL,
+    name          TEXT NOT NULL UNIQUE,
+    symbol        TEXT NOT NULL UNIQUE,
+    creation_time DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (security_type) REFERENCES security_types (name)
+);
+
+CREATE TABLE IF NOT EXISTS account_types
+(
+    name TEXT PRIMARY KEY
+) STRICT;
+
+INSERT INTO account_types(name)
+VALUES ('checking'),
+       ('security_emitter');
+
+CREATE TABLE IF NOT EXISTS accounts
+(
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    security      INTEGER  NOT NULL,
+    account_type  TEXT     NOT NULL,
+
+    amount        INTEGER  NOT NULL,
+    timestamp     DATETIME NOT NULL,
+    creation_time DATETIME DEFAULT CURRENT_TIMESTAMP,
+
+    FOREIGN KEY (security) REFERENCES securities (id),
+    FOREIGN KEY (account_type) REFERENCES account_types (name)
+);
+
+CREATE TABLE IF NOT EXISTS account_user_permissions
+(
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    account_id    INTEGER NOT NULL,
+    user_id       INTEGER NOT NULL,
+    creation_time DATETIME DEFAULT CURRENT_TIMESTAMP,
+
+    FOREIGN KEY (account_id) REFERENCES accounts (id),
+    FOREIGN KEY (user_id) REFERENCES users (id)
+
+);
+
+
+CREATE TABLE IF NOT EXISTS cashed_cheques
+(
+    id                  INTEGER PRIMARY KEY AUTOINCREMENT,
+    drawer_user_id      INTEGER NOT NULL,
+    drawer_account_id   INTEGER NOT NULL,
+    cheque_number       INTEGER NOT NULL,
+    amount              INTEGER NOT NULL,
+    underlying_security INTEGER NOT NULL,
+    payee_user_id       INTEGER NOT NULL,
+    payee_account_id    INTEGER NOT NULL,
+    creation_time       DATETIME DEFAULT CURRENT_TIMESTAMP,
+
+    FOREIGN KEY (underlying_security) REFERENCES securities (id),
+    FOREIGN KEY (drawer_user_id) REFERENCES users (id),
+    FOREIGN KEY (drawer_account_id) REFERENCES accounts (id),
+    FOREIGN KEY (payee_user_id) REFERENCES users (id),
+    FOREIGN KEY (payee_account_id) REFERENCES accounts (id),
+    CONSTRAINT double_spending UNIQUE (drawer_user_id, cheque_number) -- no double spending
+);