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>"soft" and "strong". Modified entities are always held by strong references in

of a FROM expression automatically modifies the query by adding a variable to the FROM clause

>modify or copy the materials; use the materials for any commercial purpose, or

Every entity object that is stored in the database has a primary key. Once assigned, the primary key cannot be modified. It represents the entity object as long as it exists in the database. As an object database, ObjectDB supports implicit object IDs, so an explicitly defined

="returns"> Returns: the modified query ... "> Returns: the modified query ... > Returns: the modified query

- no need to wrap every operation that modifies the database (such as persist) by transaction

supported. Methods ObjectDB supports using any method that does not modify

, as a result of special customer needs or requests) can be done without modifying code. The JDO API

, and version if it has one. In the Reference Implementation, the JDO Enhancer modifies the class ... , this method returns the current object id as modified in the current transaction. a copy of the ObjectId of this instance as modified in the transaction.

modified in this transaction. modified in this transaction. modified, deleted, newly made persistent in