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Object Relational Mapping
JPA, JDO, Hibernate, and other such new fangled database technologies
This forum is for mapping frameworks. For questions about SQL itself, we recommend the
JDBC forum
or the interactive
JDBC FAQ!
We also have a
Hibernate FAQ
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Object Relational Mapping Forum at JavaRanch
migration from 3.5 to 4.3.5 - 'Unknown entity' error problem
9 years ago
0 replies
Unable to call Scalar HQL Query from client
9 years ago
3 replies
Trying to Query with a forigen key
9 years ago
4 replies
Are primary keys necessary for entities?
9 years ago
1 reply
EJB and other Jakarta/Java EE Technologies
doubts about configure persistence.xml
9 years ago
0 replies
@DiscriminatorFormula capabilities
9 years ago
0 replies
Object Relational Mapping
JPA dependency difference
9 years ago
4 replies
JPA maven dependency
Staff volunteer someone thinks this thread is probably resolved
9 years ago
2 replies
JPA Facade and DAO
9 years ago
1 reply
Combining @OneToMany and @SecondaryTable
9 years ago
6 replies
Unable to read XML
9 years ago
1 reply
Managing Large Objects in secondary database
9 years ago
0 replies
Mapping specific property across table with filtering
9 years ago
3 replies
Mappings from different table
9 years ago
4 replies
a hibernate commit() question
9 years ago
0 replies
How to apply case insestive on the Hibernate Query?
9 years ago
1 reply
JDBC and Relational Databases
Hibernate and Mysql Exception
9 years ago
0 replies
What's the point of the collections on the @OneToMany side
9 years ago
7 replies
nested query using hql
9 years ago
2 replies
Using the namespace, http://xmlns.jcp.org/xml/ns/persistence/ causes an error.
9 years ago
0 replies
JPA, EntityTransation: Too many connections etc
9 years ago
7 replies
How configure for a (Optional) OneToOne Composite Primary Key?
9 years ago
1 reply
Can't get 2nd level cache to work
9 years ago
3 replies
Problem with two levels inheritance
9 years ago
3 replies
How do I assign an Interceptor after a SessionFactory has been created?
9 years ago
19 replies
Why is Hibernate setting all decimal points to zero in a BigDecimal?
9 years ago
12 replies
Does JPA not preserve order in which em.persist() is called?
9 years ago
1 reply
hibernate with foreign key
9 years ago
3 replies
How does JPA manage sessions / connections?
9 years ago
0 replies
Is mandating clearing the JPA context a good idea?
9 years ago
0 replies
[Hibernate] Can't see class mapping inside the HSQL Database Manager
9 years ago
1 reply
Qualified OneToMany-ManyToOne relation
9 years ago
10 replies
composite-key one to many mapping problem
15 years ago
4 replies
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