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Manual
14

JPA Primary Key

. Reference to an entity object. Composite Primary Key A composite primary key consist of multiple ... , such a primary key requires more storage space (especially if there are many references to Event objects in the database because references to entities hold primary key values) and is less efficient in store
Manual
11

JPA Metamodel API

 (which are referred to as managed types) in the persistent object model. Three methods can be used ... for exploring managed fields and properties (which are referred to as attributes). For example
Result
11

ObjectDB Object Database Features

is included in ObjectDB distribution download. Online searchable JPA API Reference (based on JavaDoc). Online searchable JDO API Reference (based on JavaDoc). Tutorials Various downloadable tutorials
Manual
8

Chapter 1 - Quick Tour

your IDE refer to one of the following tutorials: Getting Started with JPA and Eclipse Tutorial Getting
JPA Doc
8

JPA Annotations for Relationships

Relationships are persistent fields in persistable classes that reference other entity objects. The four relationship modes are represented by the following annotations: Unlike ORM JPA implementations, ObjectDB does not enforce specifying any of the annotations above. Specifying a relationship
JPA Doc
8

JPA Annotations for Value Generation

can also reference a value generator, which is defined at the class level by using one of the following annotations
Manual
8

JPA Entity Fields

: OneToOne, ManyToOne - for references of entity types. OneToMany, ManyToMany - for collections
Manual
8

JPA Persistable Types

The term persistable types refers to data types that can be used in storing data in the database. ObjectDB supports all the JPA persistable types, which are: User defined classes - Entity classes, Mapped superclasses, Embeddable classes. Simple Java data types: Primitive types, Wrappers, String
Manual
8

JPA Persistence Unit

classes and mapped superclasses), which are referred to by JPA as managed classes, as
Manual
8

JPA Query API

above, is referred to in JPA as dynamic query construction because the query string can be built dynamically