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Manual
8

JPA Query Structure (JPQL / Criteria)

is that SQL works with relational database tables, records and fields, whereas JPQL works with Java
FAQ
8

What are the main benefits of using ObjectDB?

fields can be stored by ObjectDB simply as part of the containing object. Relational databases lack
FAQ
8

What is ObjectDB?

convert objects to records/records to objects using SQL or ORM, as opposed to when using relational
Manual
8

WHERE clause (JPQL / Criteria API)

, relational operators, logical operators) and functions (numeric functions, string functions, collection
JDO Doc
6

javax.jdo.annotations.Column

when part of a foreign key relation. Target column for this column in the other table when part of a foreign key relation. Returns: the target column in the other table for this column when part of a foreign key relation. Default value: "" Since: JDO 2.1 String targetMember Target member in
JDO Doc
6

javax.jdo.annotations.Persistent

Default value: "" Since: JDO 2.1 String dependent Whether related object(s) of this member are dependent and so deleted when this object is deleted. Whether related object(s) of this member are dependent and so deleted when this object is deleted. Returns: whether the related object(s
JDO Doc
6

javax.jdo.PersistenceManager

will be traversed. Thus, to detach a graph of objects, relations to other persistent instances ... , the method might succeed, but there are no guarantees that the parameter and return instances are related ... from its default setting, then the fields specified by the fetch plan are loaded, along with related
JDO Doc
5

javax.jdo.Constants

2.1 See Also: PersistenceManagerFactory.supportedOptions() String OPTION_MAPPING_RELATION_SUBCLASS ... -relational mapping metadata file. The name of the resource for the DTD of the standard JDO object-relational mapping metadata file. Since: JDO 2.1 String ORM_XSD_NS The standard JDO object-repository mapping
JDO Doc
3

Column.target

Annotation Element javax.jdo.annotations.Column String target Target column for this column in the other table when part of a foreign key relation. Returns: the target column in the other table for this column when part of a foreign key relation. Default value: "" Since: JDO 2.1
JDO Doc
3

Column.targetMember

Annotation Element javax.jdo.annotations.Column String targetMember Target member in the other class or interface for this column when part of a bidirectional relation. Returns: the target member for this column when part of a bidirectional relation. Default value: "" Since: JDO 2.1