About Metadata API

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JPA Doc
56

JPA Metamodel API Types

The following interfaces and enum represent types in the JPA Metamodel API:  See the Metamodel Type Interface Hierarchy section for more details and examples.
JPA Doc
56

JPA Metamodel API Attributes

The following interfaces and enum types represent attributes (persistent fields and properties) in the JPA Metamodel API: See the Metamodel Attribute Interface Hierarchy section for more details and examples.
FAQ
52

ObjectDB APIs

All about ObjectDB APIs in Java/JPA database - explanations, examples, references, links and related information.
Manual
52

FROM clause (JPQL / Criteria API)

Explains how to use the FROM clause and JOIN expressions in a JPA/JPQL query.
Manual
52

Comparison in JPQL and Criteria API

Explains how comparison operators can be used in JPQL queries, including in comparing null values.
Manual
52

Logical Operators in JPQL and Criteria API

Explains how to use AND, OR and NOT in JPQL queries.
JDO Doc
28

JDOPermission.GET_METADATA

Static Field javax.jdo.spi.JDOPermission JDOPermission GET_METADATA An instance of JDOPermission to be used for getMetadata permission checking. Since: JDO 1.0
JDO Doc
28

JDOPermission.MANAGE_METADATA

Static Field javax.jdo.spi.JDOPermission JDOPermission MANAGE_METADATA An instance of JDOPermission to be used for manageMetadata permission checking. Since: JDO 1.0.2
JDO Doc
15

javax.jdo.Constants

query metadata file. The name of the resource for the DTD of the standard JDO query metadata file ... JDOQUERY_XSD_RESOURCE The name of the resource for the XML schema of the standard JDO query metadata file. The name of the resource for the XML schema of the standard JDO query metadata file. Since: JDO 2
Result
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ObjectDB Object Database Features

support of the JPA and JDO APIs. Fundamental features of relational databases (e.g. primary keys, derived ... ). Standard Persistence APIs ObjectDB is the only Object-Oriented Database with built in support for JPA 2. Java Persistence API (JPA) Most features of JPA 2 are supported. Support for remaining