diff --git a/src/databases/config_databases_sqlite.v b/src/databases/config_databases_sqlite.v
new file mode 100644
index 0000000..df58d89
--- /dev/null
+++ b/src/databases/config_databases_sqlite.v
@@ -0,0 +1,8 @@
+module databases
+
+import db.sqlite // can change to 'db.mysql', 'db.pg'
+
+pub fn create_db_connection() !sqlite.DB {
+	mut db := sqlite.connect('app.db')!
+	return db
+}
diff --git a/src/main.v b/src/main.v
index 51901fd..cd17153 100644
--- a/src/main.v
+++ b/src/main.v
@@ -1,6 +1,7 @@
 module main
 
 import veb
+import databases
 
 pub struct Context {
 	veb.Context
@@ -15,6 +16,15 @@ pub fn (app &App) index(mut ctx Context) veb.Result {
 }
 
 fn main() {
+	mut db := databases.create_db_connection() or { panic(err) }
+
+	sql db {
+		create table User
+		create table Plane
+		create table Ticket
+	} or { panic('error on create table: ${err}') }
+
+	db.close() or { panic(err) }
 	mut app := &App{}
 
 	app.handle_static('static', false)!
diff --git a/src/plane_entities.v b/src/plane_entities.v
index c618c7e..6380aa2 100644
--- a/src/plane_entities.v
+++ b/src/plane_entities.v
@@ -4,11 +4,13 @@ module main
 pub struct Plane {
 mut:
 	id              int      @[primary; sql: serial]
-	from            string   @[nonull; sql_type: 'TEXT']
-	to              string   @[nonull; sql_type: 'TEXT']
-	seats           string   @[nonull; sql_type: 'TEXT']
-	seats_available int      @[nonull; sql_type: 'INT']
-	time            string   @[nonull; sql_type: 'TEXT']
-	status          string   @[nonull; sql_type: 'TEXT']
-	tickets         []Ticket @[foreign_key: 'plane_id'; on_delete: 'cascade'; on_update: 'cascade']
+	from            string   @[sql_type: 'TEXT']
+	to              string   @[sql_type: 'TEXT']
+	seats           string   @[sql_type: 'TEXT']
+	seats_available int      @[sql_type: 'INT']
+	time            string   @[sql_type: 'TEXT']
+	date            string   @[sql_type: 'TEXT']
+	price           int      @[sql_type: 'INT']
+	status          string   @[sql_type: 'TEXT']
+	tickets         []Ticket @[fkey: 'plane_id']
 }
diff --git a/src/ticket_entities.v b/src/ticket_entities.v
index 10ecbfb..49cb7f9 100644
--- a/src/ticket_entities.v
+++ b/src/ticket_entities.v
@@ -6,4 +6,5 @@ mut:
 	id       int @[primary; sql: serial]
 	user_id  int
 	plane_id int
+	status   string @[sql_type: 'TEXT']
 }
diff --git a/src/user_entities.v b/src/user_entities.v
index be1ebb3..2d9795d 100644
--- a/src/user_entities.v
+++ b/src/user_entities.v
@@ -4,7 +4,7 @@ module main
 pub struct User {
 mut:
 	id       int      @[primary; sql: serial]
-	username string   @[nonull; sql_type: 'TEXT'; unique]
-	password string   @[nonull; sql_type: 'TEXT']
-	tickets  []Ticket @[foreign_key: 'user_id']
+	username string   @[sql_type: 'TEXT'; unique]
+	password string   @[sql_type: 'TEXT']
+	tickets  []Ticket @[fkey: 'user_id']
 }