# Data Types

Commond data types used to define entity attributes

| Name | Description | Sample Value |
|:---|:---|:---|
| string | A series of Unicode characters | `hello` |
| integer | A whole number | `1` |
| boolean | A value of true or false | `true` |
| datetime | Date and time | `2020-07-01 20:10:05` |

## References

* http://docs.oasis-open.org/cti/stix/v2.0/stix-v2.0-part3-cyber-observable-core.html