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JSON compatibility
You can use the popular JSON-oriented query language created by MongoDB to interact with data stored in HCL Informix®.
HCL Informix® JSON compatibility
The Informix® JSON Compatibility Guide describes how applications that use the popular JSON-oriented query language created by MongoDB can interact with data stored in HCL Informix.
REST API
The REST API provides a method for accessing JSON collections in Informix® and provides driverless access to your data.

JSON compatibility
You can use the popular JSON-oriented query language created by MongoDB to interact with data stored in HCL Informix®.
- HCL Informix® JSON compatibility
  The Informix® JSON Compatibility Guide describes how applications that use the popular JSON-oriented query language created by MongoDB can interact with data stored in HCL Informix.
  - About the Informix® JSON compatibility
    You can combine relational and JSON data into a single query by using the Informix® JSON compatibility features.
  - Wire listener
    The wire listener is a mid-tier gateway server that enables communication between MongoDB, REST API, and MQTT clients and the Informix® database server.
  - JSON data sharding
    You can shard data with HCL Informix®. Documents from a collection or rows from a table can be sharded across a cluster of database servers, reducing the number of documents or rows and the size of the index for the database of each server. When you shard data across database servers, you also distribute performance across hardware. As your database grows in size, you can scale up by adding more shard servers to your shard cluster.
  - MongoDB API and commands
    The Informix® support for MongoDB application programming interfaces and commands are described here.
  - REST API
    The REST API provides a method for accessing JSON collections in Informix® and provides driverless access to your data.
    - REST API syntax
      A subset of the HTTP methods is supported by the REST API. These methods are DELETE, GET, POST, and PUT.
    - Running SQL passthrough queries through REST
    - Running join queries through REST
  - MQTT protocol
    The MQTT protocol provides a method for loading JSON data in Informix®.
  - Manage time series through the wire listener
    You can create and manage time series through the wire listener. You interact with time series data through a virtual table.
  - Troubleshooting Informix® JSON compatibility
    Several troubleshooting techniques, tools, and resources are available for resolving problems that you encounter with Informix® JSON compatibility.

REST API

The REST API provides a method for accessing JSON collections in Informix® and provides driverless access to your data.

With the REST API, you can use MongoDB and SQL queries against JSON and BSON document collections, traditional relational tables, and time series data. The REST API uses MongoDB syntax and returns JSON documents.

To use the REST API, define the wire listener type to rest in the wire listener configuration file.

This graphic depicts the MongoDB and REST clients that connect to the Informix server through the wire listener.