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FAQ
11

What are the main benefits of using ObjectDB?

that ability and require multiple tables, multiple records and join operations in order to support
FAQ
11

What is ObjectDB?

objects (and graphs of objects) in an ObjectDB database directly. There's no need to define tables or
Result
11

ObjectDB Object Database Features

. Schema tree for browsing the database schema (classes, fields, indices). Table view for browsing
JDO Doc
10

javax.jdo.annotations.Join

column Name of the column in the join table. Name of the column in the join table. Returns: the name of the column in the join table Default value: "" Since: JDO 2.1 Column[] columns Detail definition ... value: "" Since: JDO 2.1 String table Table to join to (used when joining to secondary tables
JPA Doc
9

javax.persistence.InheritanceType

A strategy in which fields that are specific to a subclass are mapped to a separate table ... . A strategy in which fields that are specific to a subclass are mapped to a separate table than the fields ... 1.0 InheritanceType SINGLE_TABLE A single table per class hierarchy. A single table per class
JPA Doc
9

javax.persistence.SecondaryTables

javax.persistence Annotation SecondaryTables Target: Classes Specifies multiple secondary tables for an entity. Example 1: Multiple secondary tables assuming primary key columns are named the same in all tables. @Entity @Table(name="EMPLOYEE") @SecondaryTables
JDO Doc
8

javax.jdo.annotations.Element

serialized Whether the element is to be stored serialized (into a join table) Whether the element is to be stored serialized (into a join table) Returns: whether the element is to be stored serialized (into a join table) Default value: "" Since: JDO 2.1 String table Name of the table
JDO Doc
8

javax.jdo.annotations.Value

String serialized Whether the value is to be stored serialized (into a single column of a join table). Whether the value is to be stored serialized (into a single column of a join table). Returns: Whether the value is to be stored serialized (into a join table) Default value: "" Since: JDO 2.1 String
JPA Doc
8

javax.persistence.Column

", columnDefinition="CLOB NOT NULL", table="EMP_DETAIL") @Lob public String ... String table (Optional) The name of the table that contains the column. (Optional) The name of the table that contains the column. If absent the column is assumed to be in the primary table. Default
JPA Doc
8

javax.persistence.PessimisticLockScope

that are contained in join tables will be locked if the javax.persistence.lock.scope property is specified ... , element collections and relationships owned by the entity that are contained in join tables ... only the rows in the join table or collection table for that relationship or collection. This means