Fast Object Database for Java - with JPA/JDO support

About schema

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Database Schema Evolution

Modifications to entity classes that do not change their persistent field definitions (their schema ... schema, and old entity objects, which were stored previously in the old class schema, have to be converted to the new schema. Note: In client-server mode the ObjectDB server must be restarted
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Schema Update

The <schema> configuration element supports renaming packages, classes and fields in ObjectDB ... refactoring. Only these schema changes are specified in the configuration file. As explained in chapter 2, other schema changes are handled by ObjectDB automatically. Note: Extreme caution
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Table.schema

Annotation Element javax.persistence.Table String schema (Optional) The schema of the table. Defaults to the default schema for user. Default value: "" Since: JPA 1.0
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SecondaryTable.schema

Annotation Element javax.persistence.SecondaryTable String schema (Optional) The schema of the table. Defaults to the default schema for user. Default value: "" Since: JPA 1.0
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TableGenerator.schema

Annotation Element javax.persistence.TableGenerator String schema (Optional) The schema of the table. Defaults to the default schema for user. Default value: "" Since: JPA 1.0
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CollectionTable.schema

Annotation Element javax.persistence.CollectionTable String schema (Optional) The schema of the table. If not specified, the default schema for the user is used. Default value: "" Since: JPA 2.0
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JoinTable.schema

Annotation Element javax.persistence.JoinTable String schema (Optional) The schema of the table. Defaults to the default schema for user. Default value: "" Since: JPA 1.0
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Constants.PROPERTY_MAPPING_SCHEMA

Static Field javax.jdo.Constants String PROPERTY_MAPPING_SCHEMA Mapping "javax.jdo.mapping.Schema" Since: JDO 2.1
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SequenceGenerator.schema

Annotation Element javax.persistence.SequenceGenerator String schema (Optional) The schema of the sequence generator. Default value: "" Since: JPA 2.0
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PersistenceCapable.schema

Annotation Element javax.jdo.annotations.PersistenceCapable String schema Schema to use for persisting this class or interface. Default value: "" Since: JDO 2.1

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

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