---
title: "Data Types"
url: "https://docs.unified.to/reference/datatypes"
description: "Data types"
generated_at: "2026-05-20T23:11:01.370Z"
---
# Data Types

| Type      | Description                                                                                                                                                                    |
| --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| string    | a string                                                                                                                                                                       |
| number    | either an integer or double/float                                                                                                                                              |
| array     | a list / array of one data type                                                                                                                                                |
| boolean   | true or false                                                                                                                                                                  |
| object    | any object structure                                                                                                                                                           |
| date      | Dates/Timestamps use UTC time and are formatted as ISO 8601 strings (without milliseconds). eg. 2015-04-16T09:14:57Z                                                           |
| ID        | All object IDs are 24 byte hexadecimal strings that are created by our MongoDB servers and represent a [ObjectId](https://docs.mongodb.com/manual/reference/method/ObjectId/). |
| undefined | some values could be undefined if no information is available for that field                                                                                                   |