An important advantage of client-server architecture is that it usually makes it easier to have more than one client. solidDB, like most relational database servers, allows multiple users to access the data in a table.

When two users try to update the same data, there is a potential danger. If the updates are not the same, then updates from one user could overwrite the other updates of another user. solidDB uses concurrency control mechanisms to prevent this issue. For more information, see Concurrency control and locking.