Acceda a la opción Realtime Database a través de la opción Build > Realtime Database para Create Database
Durante el proceso de creación de la base de datos no relacional, habilite el test mode para la edición por 30 días.
En la interfaz de Realtime Database
Agregue una clave, sin valor
Referencias
Angular: Sending a POST Request with Firebase. (2020). Retrieved 14 August 2022, from https://medium.com/@monalisorathiya8/angular-sending-a-post-request-with-firebase-820f4046c89
Firebase, I., Williams, R., & singh, s. (2018). Iterate with ngFor on objects obtained from Firebase. Retrieved 14 August 2022, from https://stackoverflow.com/questions/48243273/iterate-with-ngfor-on-objects-obtained-from-firebase
Recupera datos Firebase Realtime Database. (2022). Retrieved 15 August 2022, from https://firebase.google.com/docs/database/rest/retrieve-data?hl=es