Many companies face complexities when trying to connect data between Firebase and PostgreSQL. These companies have various reasons for connecting these systems. For example, when a company acquires another firm or plans to upgrade its technical infrastructure, data transfer occurs. The company might need to connect Firebase with PostgreSQL. Or, it might require shifting the acquired firm’s data to its current storage for offline processing.

This PostgreSQL Firebase connection process involves selecting, extracting, prepping, and then converting the data to be compatible with the target data store. It may also involve syncing the data between both systems in real time or at specified intervals. Data verification is also conducted to confirm the authenticity of the data.

In this post, you will understand why Firebase PostgreSQL data integration is important. This guide will give you a step-by-step breakdown of how you can share data between these systems using native tools, and provide an easier alternative for connecting both systems for connecting your Firebase PostgreSQL applications.

Procedure to Implement Firebase PostgreSQL Integration

There are 2 methods to carry out this data integration.

Method 1: Firebase PostgreSQL Integration using Hevo

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The steps to load data from Firebase to PostgreSQL using Hevo are as follows:

  1. Authenticate and connect Firebase as your data source.

2. Connect PostgreSQL Server as a destination to load your data. 

Let’s look why Hevo is amazing:

  • Data Transformation: It provides a simple interface to perfect, modify, and enrich the data you want to transfer. 
  • Schema Management: Hevo can automatically detect the schema of the incoming data and maps it to the destination schema.
  • Incremental Data Load: Hevo allows the transfer of data that has been modified in real-time. This ensures efficient utilization of bandwidth on both ends.

Explore more about Hevo by signing up for a 14-day free trial today

Method 2: Firebase PostgreSQL Integration using JSON Files

Connecting Firebase to PostgreSQL is not quite straightforward because Firebase is completely different from PostgreSQL. PostgreSQL is a table database, where data is stored in rows and columns while on another hand, while Firebase is a JSON database where the database structure is not tabular, rather it has a tree structure.

You are going to use the managed import and export service to move data from and into Firebase. You will also use the PSQL command-line client to do the same in PostgreSQL.

Exporting Firebase Data to PostgreSQL Database

You can export your data from Firebase any time you like in the Firebase console. You are going to use the managed export service in the Firebase database console to export the data which you will later import in PostgreSQL. You can choose to export all documents but for demo purposes, we will look at how to export one collection at a time.

To export data as JSON:

Step 1: Select the node you wish to export. 

Step 2: Click the overflow menu in the upper right and select Export JSON. This option lets you export your Firebase database data in JSON format.

Step 3: Your browser will download a .json file with your Firebase data.

Step 4: Create a table in PostgreSQL with the same schema as the .json file. For example, when exporting user records, you can create a table using the following statement:

create table users 
  id     integer primary key,
  name   text not null,
  city   text

Step 5: Reference the file in a PostgreSQL table as follows:

create unlogged table users_import (doc json);

Step 6: Next, upload the file into a single row of that table using the copy command in PSQL.

copy users_import from 'users.json'

Step 7: Finally use the statement below to populate the table:

insert into users (id, name, comment)
select p.*
from users_import l
  cross join lateral json_populate_recordset(null::users, doc) as p
on conflict (id) do update 
  set name =, 
      comment = excluded.comment;

Exporting PostgreSQL Database Data to Firebase

You can also save data from the PostgreSQL database into the Firebase real-time database. To demonstrate this, you are going to export data from the users the table you created in the previous section to JSON format and import it into Firebase using the managed import service.

To do this,

Step 1: The first step is to dump data from the source PostgreSQL database and store it in JSON file format by running the following commands in your terminal:

$ t
$ a
$ o users.json
$ select array_to_json(array_agg(row_to_json(u))) from users u;

The first command set the tuples mode on. The second command sets the unaligned output format and the third command sets the output file name.

Finally, the select statement uses the row_to_json function which accepts a row as a value and returns a JSON string. array_agg is an aggregate function that aggregates the argument provided into a PostgreSQL array in a similar fashion to sum or count in MySQL.

The array_to_json function takes a PostgreSQL array and returns a single JSON value. The exported data is saved to the current working directory in a file that we have aptly named users.json.

Step 2: Now you have some data exported as JSON which can be imported into Firebase. To save data into your Firebase real-time database, select the node you wish to import data to.

Step 3: In the Firebase data page, click the overflow menu in the upper right and select Import JSON.

Step 4: Browse to the JSON file that you generated from PostgreSQL and click Import.

Congratulations! Your Firebase PostgreSQL Integration has been set up. You’ve just covered how to shift data from Firebase to Postgres and vice versa without any data loss, manipulation, or recreation. As you have seen, this manual process can become tedious when you want to transfer many records.

You should consider using a data migration tool to automate this process and speed it up. A data migration tool can help you to extract data from the source, load it to the new system, and verify its contents.

Limitations of using Manual Method for Firebase PostgreSQL Integration

If you really want to sync data in real-time then you’ll need to:

  1. Have a server that listens to changes in both database systems.
  2. Have a script that executes a SQL query every x seconds to synchronize data.
  3. Develop custom code to achieve this functionality.

Note that synchronizing the Firebase and PostgreSQL is very hard to achieve. A change in the PostgreSQL server will trigger a change in Firebase, which will trigger the listeners that change the PostgreSQL server, resulting in a feedback loop, which you somehow need to avoid.

To make your life easier, you should consider using a cloud-based data migration tool. 

Use Cases to transfer your Firebase Realtime Database data to Postgres

Integrating data from Firebase Realtime Database to Postgres provides several benefits. Here are a few use cases:

Advanced Analytics 

With the help of Postgres’ robust data processing features, you can extract insights from your Firebase Realtime Database data that would be impossible with Firebase Realtime Database alone. You can run sophisticated queries and data analysis on your data.

Data Consolidation

In the event that you use Firebase Realtime Database in conjunction with several other sources, syncing to Postgres enables you to centralize your data for a comprehensive understanding of your operations and to establish a change data capture procedure that ensures your data is never inconsistent again.

Historical Data Analysis

The historical data available in the Firebase Realtime Database is limited. Data sync with Postgres enables long-term data storage and longitudinal trend analysis.

Compliance and Data Security

Postgres has strong data security features. Postgres data sync with Firebase Realtime Database guarantees data security and enables enhanced data governance and compliance management.


Postgres is an excellent alternative for increasing organizations with growing Firebase Realtime Database data since it can manage massive amounts of data without compromising speed.

Machine Learning and Data Science

You may use machine learning models to your data for predictive analytics, consumer segmentation, and other purposes if you have Firebase Realtime Database data in Postgres.

Reporting and Visualisation

While the Firebase Realtime Database has reporting capabilities, more sophisticated business intelligence choices may be obtained by connecting data visualization programmes such as Tableau, PowerBI, and Looker (Google Data Studio) to Postgres. Airbyte can automatically convert Firebase Realtime Database tables to Postgres tables if that’s what you require.

Before wrapping up, let’s cover some basics.

Introduction to Firebase

Firebase Logo - Firebase PostgreSQL
Image Source: Wikimedia

Firebase is a Backend-as-a-Service (Baas) platform that eliminates a lot of the DevOps work that is involved when hosting applications such as managing backend databases along with the corresponding hardware. Firebase provides APIs that cover the full spectrum of backend technology. 

Related: Discover the power of Firebase Analytics and data management with our two informative blogs. In setting up Firebase Analytics with BigQuery integration we walk you through simple yet effective ways to integrate Firebase Analytics seamlessly with BigQuery. Additionally, Learn how to effortlessly interact with Firebase, enabling smooth data management and efficient querying with our blog on Firebase REST APIs loading & querying data.

Understanding the Importance of Firebase

  • Database: Two choices to choose from between Realtime DB or Firestore. The real-time database stores and synchronizes data in real-time and it also avails your app data even when you’re offline.
  • Hosting: Firebase Hosting allows developers to host static websites with an automated SSL certificate for each site deployed.
  • Storage: Cloud Storage for Firebase offers object storage in the cloud (similar to AWS S3).
  • Functions: Cloud Functions for Firebase allow you to run serverless functions in the cloud (similar to AWS Lambda).
  • Authentication: Really makes auth easy by providing backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app.

And there are many more products within the Firebase ecosystem that enable developers to quickly develop high-quality apps, grow their user base, and earn profit.

Firebase is compatible with JavaScript, iOS, and Android. 

Despite its advanced technology, users have to build their indexes manually, making it a bit more difficult to query larger datasets — something that you can easily achieve using PostgreSQL.

Introduction to PostgreSQL

PostgreSQL Database Logo: Firebase PostgreSQL
Image Source: Thales CPL

PostgreSQL, also known as Postgres, is the world’s most popular open-source database. It’s an object-relational database that applies the SQL language combined with many features that allow you to set up, maintain, manage, and administer your relational databases. You can use it to safely store and scale the most complicated data workloads.

If you are looking to streamline your PostgreSQL workflow, do read our blog on PostgreSQL import CSV, saving you time and effort. And if you’re interested in optimizing performance and achieving high availability, don’t miss our guide on setting up PostgreSQL clusters [+clustering options].

Understanding the Importance of PostgreSQL

PostgreSQL is highly extensible and it has many advanced features that outperform most relational databases such as upsert, geospatial support, high availability, streaming replication, bidirectional replication, logical replication, horizontal partitioning, full-text search, key-value-storage (JSON / JSONB column type), and a foreign-data-wrapper extension that lets you query external sources directly from within PostgreSQL.

Thanks to the broad support of many field types, it can function in situations where you might choose a document-based (NoSQL) database. It has superior indexing capabilities that can benefit high-performance applications with low thresholds for latency.

PostgreSQL support for clustering makes it well-suited for data warehousing environments. Many companies have been built around PostgreSQL like AWS Redshift, CitusDB, EnterpriseDB, Timescale, Red Hat, Skype, PostGIS, and others.

Pre-Requisites for Implementation of Firebase PostgreSQL Integration

  • Set up a Firebase project.
  • PostgreSQL Server set up on your local machine.
  • PSQL client installation on your PostgreSQL server.


In this article, we have delved into the significance of establishing a Firebase PostgreSQL connection and explored two distinct methods for integrating Firebase PostgreSQL. By following the step-by-step explanations, you now have a comprehensive understanding of how to implement Firebase PostgreSQL integration using both manual and automated approaches.

While the manual method provides a viable option for smaller projects or scenarios requiring fine-grained control, we have also discussed its limitations. The automated method using Hevo Data Pipelines, on the other hand, offers a streamlined and efficient solution, particularly for larger-scale applications that demand seamless data synchronization between Firebase PostgreSQL.

Visit our Website to Explore Hevo

Integrating and analyzing data from a huge set of diverse sources can be challenging, this is where Hevo comes into the picture. Hevo is the only real-time ELT No-code Data Pipeline platform that cost-effectively automates data pipelines that are flexible to your needs.

Hevo with its strong integration with 150+ Data Sources & BI Tools (including 50+ free sources), allows you to not only export & load data but also transform & enrich your data & make it analysis-ready in a jiffy.

Get started with Hevo today! Sign Up here for a 14-day free trial!

Tell us about your experience of setting up Firebase PostgreSQL Integration. Share your thoughts in the comments section below!

Software Developer, Hevo Data

Talha is a seasoned Software Developer, currently driving advancements in data integration at Hevo Data, where he have been instrumental in shaping a cutting-edge data integration platform for the past four years. With a significant tenure at Flipkart prior to their current role, he brought innovative solutions to the space of data connectivity and software development.

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