Project is the basic unit of operation in MaxCompute. It is similar to the concept of Database or Schema in traditional databases, and sets the boundary for MaxCompute multi-user isolation and access control.  You can have multiple project permissions at the same time and, by granting relevant authorization, users can access the objects of another project in their own project, such as Table, Resource,, Function and Instance.

To enter a project (in this example, ‘my project’),  run the Use Project command, as follows:
use my_project -- Enter a project named 'my_project'.

After running the preceding command, you can enter a project named my project and all objects in this project can be operated.  Use Project is a command provided by the MaxCompute client.  For more commands, see Common Commands.