Sandbox in salesforce

There are four types of sandboxes in Salesforce:

• Developer Sandbox — It contains a copy of the production org’s metadata and is intended for both development and testing in an isolated environment.
• Developer Pro Sandbox — It performs the same function as the developer sandbox, but can contain larger datasets.
• Partialcopy sandbox — It is intended to be used only as a testing environment. It contains a sample of the production org’s data and its metadata.
• Full sandbox — It is intended to be used only as a testing environment. It contains all the data of the production org, including objects, attachments and metadata.