You can use TypeORM in connection with the cordova-sqlite-storage plugin in your Ionic app. This project demonstrates how that would work.

1. Install the ionic and cordova cli: npm install -g cordova ionic
2. Install all dependencies: npm install
3. Add a platform: ionic cordova platform add <ios | android>
4. Run the app: ionic cordova run <ios | android>. If you need help, you can read ionic's guide for running an app on your device

1. Install the plugin: ionic cordova plugin add cordova-sqlite-storage --save
2. Install TypeORM: npm install typeorm --save
3. Install node.js-Types: npm install @types/node --save-dev
4. Add "typeRoots": ["node_modules/@types"] to your tsconfig.json under compilerOptions

Since Ionic make a lot of optimizations when building for productions, the following limitations occur

1. Entities have to be marked with the table name (eg @Entity('table_name'))
2. Date fields aren't supported

@Column()
birthdate: Date;