nz.co.gregs.dbvolution.annotations

Annotation Type DBPrimaryKey

@Target(value={FIELD,METHOD})
@Retention(value=RUNTIME)
public @interface DBPrimaryKey

DBPrimaryKey indicates that the field is the primary key for the table.
@DBPrimaryKey
@DBColumn("my_table_id")
public DBInteger myPrimaryKey = new DBInteger();



DBPrimaryKey is used extensively within DBvolution and should be specified in most tables, many-to-many link tables being a notable exception.

DBPrimaryKey works with DBForeignKey and DBQuery to make Natural Joins happen automatically.

DBPrimaryKey does not require a primary key relationship to exist within the database and does not enforce referential integrity.

DBPrimaryKey is generated automatically by DBTableClassGenerator if the primary key is specified within the database.

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Author:

Gregory Graham

See Also:

DBForeignKey, DBColumn, DBAutoIncrement