These objects are transient in nature, created and freed throughout the life of the application on an as-needed basis. A stateless session bean is completely transient and encapsulates a temporary piece of business logic needed by a specific client for a limited time span. The conversational state enables the container to maintain information about the state of the session bean and to recreate that state at a later point in program execution when needed. Entity Bean Entity beans relate to physical data, such as a row in a database. Entity beans are long-lived, because they are tied to persistent data.
Entity beans are always transactional and multiuser aware.