Dynamically update a table

Yes, but. In order to capture and update a table in App A with the tables in App B, you will need to do one of two things. If you're comfortable building your own solution, you can utilize the API and access an application's schema using API_GetSchema, then update the list of tables using the information from this. The second option would be to use a pre-built tool that can capture the schema of one or more applications for you. Tools like this are available from several QSPs including DataCollaborative and Juiced Technologies. An example of one of these is available in the App Exchange and it's called QuickBase Application Documenter.