About primary key

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JDO Doc
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Persistent.primaryKey

Annotation Element javax.jdo.annotations.Persistent String primaryKey Whether this member is part of the primary key for application identity. This is equivalent to specifying @PrimaryKey as a separate annotation on the member. Returns: whether this member is part of the primary key Default value: "" Since: JDO 2.1
JDO Doc
5

PrimaryKey.column

Annotation Element javax.jdo.annotations.PrimaryKey String column Name of the column to use for the primary key Returns: the name of the column to use for the primary key Default value: "" Since: JDO 2.1
JDO Doc
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PrimaryKey.columns

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

Annotation Element javax.jdo.annotations.PrimaryKey String name Name of the primary key constraint Returns: the name of the primary key constraint Default value: "" Since: JDO 2.1
JPA Doc
5

TableGenerator.pkColumnValue

Annotation Element javax.persistence.TableGenerator String pkColumnValue (Optional) The primary key value in the generator table that distinguishes this set of generated values from others that may be stored in the table. Defaults to a provider-chosen value to store in the primary key column of the generator table Default value: "" Since: JPA 1.0
JDO Doc
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javax.jdo.annotations.PersistenceCapable

objectIdClass Primary key class when using application identity and using own PK. Primary key class
Manual
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SSL Configuration

private key and its corresponding public key (the SSL protocol is based on the RSA algorithm ... . This file is generated from the Keystore file by omitting the private key (it still contains the general information and the public key). You can generate these files using the JDK keytool utility
JPA Doc
4

Column.unique

is a unique key. This is a shortcut for the UniqueConstraint annotation at the table level and is useful for when the unique key constraint corresponds to only a single column. This constraint applies in addition to any constraint entailed by primary key mapping and to constraints specified at the table level. Default value: false Since: JPA 1.0
JDO Doc
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ForeignKey.table

Annotation Element javax.jdo.annotations.ForeignKey String table Table for the foreign key. This is needed iff annotating a type where the foreign key is not defined on the primary table for the type. Returns: the table on which the foreign key is defined Default value: "" Since: JDO 2.1
JDO Doc
4

jdoNewObjectIdInstance(o)

with the values of the primary key fields of the persistence-capable instance on which the method is called. If the key is the wrong class for the object id class, null is returned. For classes that use single ... instance of the class used for JDO identity, using the key constructor of the object id class