The document discusses Hibernate, a framework that provides persistence services and allows Java classes to represent database tables. It details how Hibernate manages database connections and transactions, and while it excels in object-relational mapping, it may lack performance in connection and transaction management, often requiring integration with other tools. The text also highlights the flexibility of Hibernate's architecture, which can operate in a 'lite' mode or with full component usage.

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2. The above diagram shows that Hibernate is using the
database and configuration data to provide persistence
services (and persistent objects) to the application.
To use Hibernate, it is required to create Java classes that
the
the
represents the table in
the
the database and then map
instance variable in class with the columns in
database. Then Hibernate can be used to perform operations
on the database like select, insert, update and delete the
records in the table. Hibernate automatically creates the
query to perform these operations.

3. Connection Management:-Hibernate connection
management service provide efficient
management of the database connections.
Database connection is the most expensive part
of interacting with the database as it requires a
lot of resources of open and close the database
connection.

4. Transaction management service provide
the ability to the user to execute more
than one database statements at a time.

5. Object relational mapping is technique of
mapping the data representation
model to a relational data model.
from an object
This part of the
hibernate
delete the
is used to select, insert, update and
records form the underlying table.
When we pass an object
reads
object
to a Session. Save()
method,
variables
necessary
Hibernate the
and
state of the
theof that executes
query.

6. is very good tool as far as object
relational mapping is concern, but in terms of
connection management and transaction
management, it is lacking in performance and
capabilities. So usually hibernate is being used
with other connection management and
transaction management tools
Hibernate provides a lot of flexibility in use. It is
called "Lite" architecture when we only uses the
object relational mapping component. While in"
component Object Relational mapping,
Connection Management and Transaction
Management) are used.

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