About composite

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ObjectDB Object Database Features [2018-01-27]

other internal caches. Indexing Single field and multi field (composite) indices. Collection and array ... ObjectDB with no @Id field. Simple primary key - a single @Id field. Composite primary key - multiple ... replication (clustering) with an unlimited number of slave nodes. Dynamic composite database
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ObjectDB Object Database Features [2018-10-27]

other internal caches. Indexing Single field and multi field (composite) indices. Collection and array ... ObjectDB with no @Id field. Simple primary key - a single @Id field. Composite primary key - multiple ... replication (clustering) with an unlimited number of slave nodes. Dynamic composite database
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ObjectDB Object Database Features

Single field and multi field (composite) indices. Collection and array elements are indexable ... . Simple primary key - a single @Id field. Composite primary key - multiple @Id fields or ... ) with an unlimited number of slave nodes. Dynamic composite database connections for high
Manual
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Database Replication and Clustering

should represent a user on the slave server rather than on the master server. Finally, a composite url ... .odb;user=b;password=b" ); A composite url contains two or more database urls separated by
Manual
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Numbers in JPQL and Criteria Queries

.g. LOCATE, LENGTH. as composite arithmetic expressions that use operators and functions to combine
Manual
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SELECT clause (JPQL / Criteria API)

propagated to the database. Multiple SELECT Expressions The SELECT clause may also define composite
JPA Doc
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JPA Annotations for Classes

are useful in representing composite primary keys as explained in the Primary Key section of the ObjectDB manual.
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What is new in ObjectDB 2.0?

query execution. Support of composite indexes and using indexes in query result sort. Improved query
Manual
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Logical Operators in JPQL and Criteria API

Logical operators in JPQL and in JPA criteria queries enable composition of complex JPQL boolean expressions out of simple JPQL boolean expressions. Logical Operators ObjectDB supports 2 sets of logical operators, as shown in the following table: Set 1 - JPQL / SQL Set 2 - Java / JDO AND && OR
FAQ
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Is ObjectDB better than competing object databases?

almost every application. ObjectDB supports user defined primary keys including composite primary keys. The support