Upgrade the database schema and data

Anytime you perform an action that causes the database schema or data to change, you must update them by running the command discussed in this section. A partial list of reasons follows:

You upgraded the application using the command line
You installed or updated a component using the command line
You enabled or disabled a component using the command line

NOTE

A component can be a module, theme, or language pack; it doesn’t matter whether the component comes from the Commerce Marketplace or not.

Start the upgrade:
```
bin/magento setup:upgrade [--keep-generated]
```
Where --keep-generated is an optional argument that does not update static view files. This optional argument is for use only in limited circumstances by experienced system integrators. It should be used only in production mode. It should not be used in developer mode.
Clean the cache:
```
bin/magento cache:clean
```