Summarize how database design principles differ with regards to the design of updateable databases and the design of read-only databases.

The very nature of updatable and read-only database is different. Updatable databases are accessed by user and amended while read-only databases cannot be updated without getting a set of privileges.

In the case of updatable databases, developers try to manage different inconsistencies that may arise later. Normalization principles may have to be applied. Read only databases does not need to be normalized.