What is EdgeDB?

Prabin Karki
5 min readJul 16


EdgeDB is a modern, open-source relational database management system (RDBMS) designed to address the complexities of data modeling, query languages, and schema management in the database landscape. It stands out as a novel solution that combines the best aspects of traditional relational databases with the flexibility of NoSQL databases, making it an innovative choice for developers, data engineers, and businesses alike.

Key Features and Significance of edgedb:

Schema-First Approach: EdgeDB takes a “schema-first” approach, where data models are defined upfront using a powerful type system. This approach ensures data consistency and reduces the likelihood of data anomalies or errors. By focusing on the schema from the beginning, developers can build robust applications with well-defined data structures.

EdgeQL: The Heart of EdgeDB: One of the standout features of EdgeDB is its sophisticated query language, EdgeQL. It’s a purpose-built language for EdgeDB that provides a developer-friendly and expressive way to interact with the database. EdgeQL is designed to be intuitive, allowing users to work efficiently with complex data models while avoiding the complexity often associated with SQL.

Object-Relational Mapping (ORM) Simplified: With EdgeDB, the need for complex ORMs is minimized since it natively supports object-oriented data modeling. This simplifies the data access layer and enhances the codebase’s readability and maintainability.

Data Integrity and Constraints: EdgeDB enforces strong data integrity through its robust type system and constraints. It ensures that only valid data can be inserted, avoiding inconsistent or invalid records.

Seamless Integration: EdgeDB provides native client libraries for popular programming languages such as Python, JavaScript, and Rust. This allows developers to integrate EdgeDB into their existing tech stack effortlessly.

Scalability and Performance: EdgeDB is designed to scale efficiently and handle both read and write-heavy workloads effectively. Its performance characteristics and optimizations make it suitable for various use cases.

Modern Database Ecosystem: EdgeDB is part of the vibrant modern database ecosystem, addressing the evolving needs of developers and businesses for scalable, high-performance, and developer-friendly databases.

Open Source and Community-Driven: As an open-source project, EdgeDB benefits from a thriving community of contributors and users who actively contribute to its development and improvement. This fosters transparency, innovation, and continuous enhancements to the database.

edgedb architecture.

Schema Design and Migrations

Schema design and migrations are essential aspects of working with EdgeDB. EdgeDB’s “schema-first” approach allows developers to define the data model upfront, ensuring data consistency and avoiding data anomalies. Let’s delve into how schema design and migrations work in EdgeDB:

Schema Design:

EdgeDB’s schema design is centered around the concept of “types” and “object types.”

Types represent data entities or concepts, such as users, products, or orders.

Object types define the structure of data entities and their relationships with other types.

Properties, links, and constraints can be defined within object types to enforce data integrity.

Edgedb Schema Migration:

EdgeQL, EdgeDB’s expressive query language, is tightly integrated with schema design and migrations.

When you make schema changes, EdgeDB automatically updates the EdgeQL queries affected by those changes.

This seamless integration ensures that your application’s queries remain compatible with the evolving schema.

for migration edge-db do not need any other extra tools or service it has it’s own migration and migrate service.

Some of common command for edgedb is give below:

edgedb server start: Starts the EdgeDB server.

edgedb server stop: Stops the EdgeDB server.

edgedb server restart: Restarts the EdgeDB server.

edgedb server status: Displays the status of the EdgeDB server.

edgedb migration create: Creates a new database migration.

edgedb migration list: Lists all available migrations.

edgedb migration status: Shows the current migration status.

edgedb migration apply: Applies pending migrations to the database.

edgedb migration revert: Reverts the last applied migration.

edgedb migrate: Alias for edgedb migration apply.

edgedb shell: Opens the EdgeDB shell to interact with the database using EdgeQL queries.

edgedb query: Executes an EdgeQL query from the command line.

edgedb generate-schema: Generates an SDL schema file based on the current database schema.

edgedb generate-migrations: Generates new migrations based on the current schema changes.

edgedb upgrade: Upgrades the EdgeDB instance to the latest available version.

edgedb service create: Creates a new EdgeDB instance (service) on the EdgeDB Cloud.

edgedb service list: Lists all EdgeDB instances (services) available on the EdgeDB Cloud.

edgedb service delete: Deletes an existing EdgeDB instance (service) from the EdgeDB Cloud.

Edgedb with a python:

EdgeDB is a modern and developer-friendly database that provides excellent integration with Python through its native client library. When using EdgeDB with Python, developers can take advantage of its powerful features, such as schema-first design, object-oriented data modeling, and the expressive EdgeQL query language.

The EdgeDB Python client library allows Python applications to connect to the EdgeDB server, execute EdgeQL queries, and process query results effortlessly. This seamless integration simplifies data management, enhances productivity, and ensures data consistency.

To use EdgeDB with Python, you typically follow these steps:

Install the EdgeDB Python Client: You can install the EdgeDB Python client library using pip:

pip install edged

Connect to the EdgeDB Server: In your Python code, you can establish a connection to the EdgeDB server using the client library. You’ll need to provide the necessary connection parameters, such as the database URL, username, and password.

Execute EdgeQL Queries: Once connected, you can use the client library to execute EdgeQL queries and interact with the EdgeDB database. The client library provides functions to send queries and receive query results.

Process Query Results: The results of the EdgeQL queries are returned as Python data structures, such as dictionaries or lists, depending on the query response.

Why edge-db instead of other database?

EdgeDB is preferred over other databases for its schema-first approach, integrated EdgeQL query language, object-oriented data modeling, horizontal scalability, and strong data integrity, making it easier to work with complex data, improve query performance, and ensure data consistency.


EdgeDB’s significance lies in its ability to simplify data modeling, provide an expressive query language, and offer seamless integration with modern programming languages. It bridges the gap between relational and NoSQL databases, offering a novel solution for building robust, scalable, and maintainable applications. As the database landscape continues to evolve, EdgeDB stands as a promising contender in reshaping how developers interact with and manage their data.





Prabin Karki

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