The following table describes the Cosminexus JPA Provider functionality. Select the functionality according to the purpose of a system. For details about the functionality, see the reference location.

Table 1-6 Correspondence between the Cosminexus JPA Provider functionality and the purpose of a system

Functionality name	Purpose of a system					Compliance with Java EE standards		Reference location
	Reliability	Performance	Operation and maintenance	Expansion	Others	Standard	Expanded
Updating the database using entities	Y	Y	N	N	N	Y	Y	6.3
Entity operations by EntityManager	N	N	N	N	Y	Y	Y	6.4
Defining the mapping information between a database and Java objects	N	N	N	N	Y	Y	Y	6.5
Entity relationship	N	Y	N	N	N	Y	Y	6.6
Functionality for caching entity objects	N	Y	N	N	N	N	Y	6.7
Auto-numbering of primary key values	N	N	N	N	Y	Y	Y	6.8
Database operations based on query language	N	N	Y	N	N	Y	Y	6.9
Optimistic lock	Y	N	N	N	N	Y	Y	6.10
Pessimistic lock in the JPQL	Y	N	N	N	N	N	Y	6.11

Legend:

Y: Supported

N: Not supported

Note: The functionality for which Y is specified in both Standard and Expanded columns of the Compliance with Java EE standards column indicates that the Application Server-specific functionality has been expanded to the Java EE standard functionality. The functionality for which Y is specified only in the Expanded column indicates the Application Server-specific functionality.