About primary key

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JDO Doc
19

StringIdentity(pcClass, key)

Constructor javax.jdo.identity.StringIdentity StringIdentity(   Class pcClass,   String key ) Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0
JDO Doc
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Extension.key

Annotation Element javax.jdo.annotations.Extension String key The key for the extension (required). Returns: the key Since: JDO 2.1
JPA Doc
19

key()

Method javax.persistence.criteria.MapJoin Path key() Create a path expression that corresponds to the map key. Returns: path corresponding to map key Since: JPA 2.0
JDO Doc
19

Key.column

Annotation Element javax.jdo.annotations.Key String column Name of the column to store the key in. Returns: name of the column to store the key in Default value: "" Since: JDO 2.1
JDO Doc
19

Key.columns

Annotation Element javax.jdo.annotations.Key Column[] columns The column(s) for the key Returns: the column(s) for the key Default value: {} Since: JDO 2.1
JDO Doc
19

Key.dependent

Annotation Element javax.jdo.annotations.Key String dependent Whether the key is dependent on the owner (and will be deleted when the owner is deleted). Returns: whether the key is dependent on the owner Default value: "" Since: JDO 2.1
JDO Doc
19

Key.embedded

Annotation Element javax.jdo.annotations.Key String embedded Whether this key is embedded. Returns: whether this key is embedded Default value: "" Since: JDO 2.1
JDO Doc
19

Key.embeddedMapping

Annotation Element javax.jdo.annotations.Key Embedded[] embeddedMapping The embedded mapping for the key. Returns: the embedded mapping for the key Default value: {} Since: JDO 2.1
JDO Doc
19

Key.foreignKey

Annotation Element javax.jdo.annotations.Key String foreignKey Name for a generated foreign key constraint. Returns: the name of the generated foreign key constraint Default value: "" Since: JDO 2.1
JDO Doc
19

Key.generateForeignKey

Annotation Element javax.jdo.annotations.Key String generateForeignKey Generate or assume a foreign key constraint exists on the column or columns associated with this join. Specify "true" or "false". Returns: whether to generate or assume a foreign key constraint Default value: "" Since: JDO 2.1