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About Transaction

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Tutorial
7

Step 1: Create a Maven Web Project

>      javax.transaction    jta    1.1
Tutorial
7

Step 2: Entity Class and Persistence Unit

/xml/ns/persistence/persistence_2_0.xsd"> transaction-type
Tutorial
7

Step 2: Entity Class and Persistence Unit

/persistence_2_0.xsd"> transaction-type="JTA"> com
Tutorial
7

Step 2: Entity Class and Persistence Unit

.com/xml/ns/persistence/persistence_2_0.xsd"> transaction
Tutorial
7

Step 2: Entity Class and Persistence Unit

name="GuestbookPU" transaction-type="RESOURCE_LOCAL"> com.objectdb.jpa.Provider
Tutorial
7

Step 4: Add a Servlet Class

the transaction if still active) is closed. The next step is adding a JSP page that will produce the guestbook page output.
Tutorial
7

Step 4: Add a Servlet Class

the page output. Finally, the database connection (including the transaction if still active) is closed
FAQ
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What is ObjectDB?

ObjectDB is an Object Oriented Database Management System (ODBMS). It provides all the standard database management services (storage and retrieval, transactions, lock management, query processing, etc.), but it uses an object oriented model to store and manage data. You can easily store ordinary
Manual
7

SELECT clause (JPQL / Criteria API)

are not associated with an EntityManager and changes to them when a transaction is active are not
JDO Doc
7

makeTransactional(pc)

to transactional boundaries. Transient instances normally do not observe transaction boundaries. This method makes transient instances sensitive to transaction completion. If an instance is modified in a transaction, and the transaction rolls back, the state of the instance is restored to the state