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Manual
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Chapter 3 - Using JPA

This chapter explains how to manage ObjectDB databases using the Java Persistence API (JPA). The first two pages introduce basic JPA interfaces and concepts: The next section explains how to use JPA for database CRUD operations: More advanced topics (e.g. locking and events) are discussed in the last section:
Result
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Company

ObjectDB Software develops, markets and supports the ObjectDB Object-Oriented Database Management System (ODBMS). ObjectDB Software is the market leader in providing a very high performance persistence solution for Java, based on the Java Persistence API (JPA) and the Java Data Objects (JDO
JPA Doc
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Criteria Query From Elements

Fetch Elements Join Fetch is managed in criteria queries by the following interfaces: See the FROM in Criteria Queries section for more details and an example.
Manual
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FROM clause (JPQL / Criteria API)

response time. Database Management Systems (DBMS), including ObjectDB, try to optimize execution
Manual
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General Settings and Logging

-history size="50" user="true" password="true" /> ObjectDB manages a list of the recently accessed
FAQ
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Is ObjectDB scalable? What are its limitation?

ObjectDB is highly scalable and can manage efficiently databases in a wide range of sizes, from a few Kilobytes to hundreds of Gigabytes and even Terabytes. ObjectDB can be used in small embedded single user applications as well as in heavy loaded multi threaded multi user applications. ObjectDB
JDO Doc
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JDO Annotations for Fields

The way a field of a persistable class is managed by JDO can be set by the following annotations and enum types:
JPA Doc
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JPA Annotations for Fields

The way a field of a persistable class is managed by JPA can be set by the following annotations: Additional annotations (and enum) are designated for enum fields: Other additional annotations (and enum) are designated for date and calendar fields: Chapter 2 of the ObjectDB manual explains how to use all the above annotations.
JPA Doc
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JPA Annotations for Java EE

The following JPA annotations are in use to integrate JPA into a Java EE application and are managed by the Java EE container:
JPA Doc
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JPA Miscellaneous

This section contains miscellaneous JPA types. The PersistenceUtil and PersistenceUnitUtil interfaces provide general utility methods: The Cache interface and the CacheRetrieveMode and CacheStoreMode enum types serve in managing the EntityManagerFactory's shared (level 2) cache: Other enum types are provided for setting of various JPA operations: