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Database Connection using JPA

/image.png"> Overview A connection ... require multiple database connections during their lifetime. For instance, in a web application it is common to establish a separate database connection, using a separate EntityManager

Obtaining a JPA Database Connection

In JPA a database connection is represented by the instance represents a connection to the database. When using JPA, every operation ... application-wide EntityManagerFactory. When the connection to the database

[ODB1] Chapter 5 - JDO Connections

of database connections. Its main role is to provide PersistenceManager instances. The PersistenceManager interface represents a database connection. Every operation ... .PersistenceManagerFactory Most applications require multiple database connections during their lifetime

Constants.PMF_ATTRIBUTE_CONNECTION_FACTORY_NAME

">javax.jdo.ConstantsString PMF_ATTRIBUTE_CONNECTION_FACTORY_NAME The name of the persistence manager factory element's "connection-factory-name" attribute.

Constants.PMF_ATTRIBUTE_CONNECTION_FACTORY2_NAME

">javax.jdo.ConstantsString PMF_ATTRIBUTE_CONNECTION_FACTORY2_NAME The name of the persistence manager factory element's "connection-factory2-name" attribute.

Constants.PMF_ATTRIBUTE_CONNECTION_DRIVER_NAME

">javax.jdo.ConstantsString PMF_ATTRIBUTE_CONNECTION_DRIVER_NAME The name of the persistence manager factory element's "connection-driver-name" attribute.

Constants.PMF_ATTRIBUTE_CONNECTION_URL

">javax.jdo.ConstantsString PMF_ATTRIBUTE_CONNECTION_URL The name of the persistence manager factory element's "connection-url" attribute.

Constants.PMF_ATTRIBUTE_CONNECTION_PASSWORD

">javax.jdo.ConstantsString PMF_ATTRIBUTE_CONNECTION_PASSWORD The name of the persistence manager factory element's "connection-password" attribute.

Constants.PMF_ATTRIBUTE_CONNECTION_USER_NAME

">javax.jdo.ConstantsString PMF_ATTRIBUTE_CONNECTION_USER_NAME The name of the persistence manager factory element's "connection-user-name" attribute.

Constants.OPTION_GET_DATASTORE_CONNECTION

Static Field javax.jdo.ConstantsString OPTION_GET_DATASTORE_CONNECTION "javax.jdo