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Obtaining a JPA Database Connection

>EntityManager, em, it is very easy to begin a transaction: begin">begin(); There is a one to one relationship between

Setting and Tuning of JPA Queries

where the result window begins, i.e. how many results at the beginning of the complete result list

Deleting JPA Entity Objects

/jpa/EntityTransaction/begin">begin(); em.

[ODB1] Chapter 5 - JDO Connections

.getPersistenceManager(); try { pm.currentTransaction().begin(); // Operations ... a call to begin() and ended by a call to commit() or rollback()begin(); // Operations that modify the database should come

Step 4: Add a Servlet Class

"); if (name != null) { em.getTransaction().begin(); em

Step 3: Define an EJB Session Bean

every operation that modifies the database (such as persist) by transaction begin

Step 3: Define a Spring DAO Component

(such as persist) by transaction begin and commit.

Step 3: Add a Main Class

the database: em.getTransaction().begin(); for (int i = 0; i < 1000; i

Step 3: Add a Main Class

(); // Store 1000 Point objects in the database: em.getTransaction().begin(); for (int i = 0

Step 3: Define a Spring DAO Component

that modifies the database (such as persist) by transaction begin and