angular sqlite: new transaction is waiting for open operation

Im trying to use the sqlite plugin for my ionic app. I want to create a database and to create my tables:

angular.module("App")

.factory("DatabaseFactory", function ($cordovaSQLite) {
    var database = null;

    var factory = {};

    factory.getDatabase = function () {
        if (database == null) {
            database = $cordovaSQLite.openDB({
                name: "myDB.db"
            });

            database.transaction(function(tx) {
                tx.executeSql(create_user, [], function(tx, res) {
                    console.log("user: " + res.rows.item(0).uppertext); 
                }, function(error) {
                    console.log("error: " + error.message);
                });
                tx.executeSql(create_step, [], function(tx, res) {
                    console.log("step: " + res.rows.item(0).uppertext); 
                }, function(error) {
                    console.log("error: " + error.message);
                });
                tx.executeSql(create_goal, [], function(tx, res) {
                    console.log("goal: " + res.rows.item(0).uppertext); 
                }, function(error) {
                    console.log("error: " + error.message);
                });
            }, function(error) {
                console.log("transaction error: " + error.message);
            }, function() {
                console.log("transaction ok");
            });
        }

        return database;
    }

    return factory;
});

But there is a problem. The logoutput says the following:

OPEN database: myDB.db
new transaction is waiting for open operation
DB opened: myDB.db

So does that mean i try to execute the transaction before the database is opened? if yes how can i wait for the database to be opened before executing the transaction? I guess i would also have to wait until the transaction is done before i return my database.

Thx for help in advance.