One test fails :(

resources/migrations/sql/create_tables_001.sql

@@ -2,7 +2,6 @@ PRAGMA journal_mode= WAL;
 
 CREATE TABLE IF NOT EXISTS ledger_internal
 (
-    -- th
     id            INTEGER PRIMARY KEY AUTOINCREMENT,
     creation_time DATETIME DEFAULT CURRENT_TIMESTAMP,
     cookie_secret TEXT NOT NULL
@@ -38,6 +37,20 @@ CREATE TABLE IF NOT EXISTS securities
     FOREIGN KEY (security_type) REFERENCES security_types (name)
 );
 
+CREATE TABLE IF NOT EXISTS interest_rates
+(
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    security_id INTEGER NOT NULL,
+    security_rate_id INTEGER NOT NULL,
+    start_date DATETIME NOT NULL,
+    end_date DATETIME,
+    rate REAL NOT NULL,
+    FOREIGN KEY (security_id) REFERENCES securities(id),
+    CONSTRAINT unique_security_rate_id UNIQUE (security_id, security_rate_id),
+    CHECK (end_date IS NULL OR start_date <= end_date),
+    CHECK ( rate >= 0 )
+);
+
 CREATE TABLE IF NOT EXISTS account_types
 (
     name TEXT PRIMARY KEY
@@ -60,7 +73,9 @@ CREATE TABLE IF NOT EXISTS accounts
     creation_time DATETIME DEFAULT CURRENT_TIMESTAMP,
 
     FOREIGN KEY (security) REFERENCES securities (id),
-    FOREIGN KEY (account_type) REFERENCES account_types (name)
+    FOREIGN KEY (account_type) REFERENCES account_types (name),
+    CHECK (amount >= 0 OR (account_type = 'security_emitter'))
+
 );
 
 CREATE TABLE IF NOT EXISTS accounts_history