Introduction

This document describes Doradus Logging databases. In Doradus, an application is a named database with its own schema and data. Every schema selects a specific storage service to manage its data. When a schema selects the Doradus Logging storage service, the deployed instance is called a Doradus Logging database. The Logging storage service is optimized to manage immutable, time-series data such as log records and events. This document describes the unique features of the Logging service, including its data model, query language, and REST API commands.

This document is organized into the following sections:

•	Logging Database Overview: An overview of the Logging database including its unique features and the type of applications it is best suited for.

•	Logging Data Model: Describes the data model concepts use by Doradus Logging.

•	Doradus Query Language (DQL): A detailed description of DQL specific to Doradus Logging.

•	REST Commands: Describes the REST commands supported by the Logging service for application management, updating data, and queries.

This documentation is relative to the v2.4 release, which is the first release of the Doradus Logging service.