What is the difference between Session bean and Entity bean?one?

The Session bean and Entity bean are two main parts of
EJB container.

Session Bean

#  represents a workflow on behalf of a cliennt
# one-to-one logical mapping to a client.
# created and destroyed by a client
# not permanent objects
# lives its EJB container(generally) does noot survive
system shut down

entity bean

# two types: stateless and stateful beans Entity Bean
# represents persistent data and behavior off this
data
# can be shared among multiple clients
# persists across multiple invocations
# findable permanent objects
# outlives its EJB container, survives systeem
shutdown
# two types: container managed persistence(CCMP) and
bean managed persistence(BMP)