About unique

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Help understanding Entity behavior with JPA

of (type, ID) should identify entity objects uniquely. Therefore, only one entity object per (type, ID
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How best to unbind all names?

a 'name' field, which may be set as a primary key or as a unique index. This will also solve the orphan
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How to have a distribuited GWT application with ObjectDB and Spring?

its own ObjectDB database as a database server, each database has a unique url and each database can be accessed
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Memory consumption of empty Strings

. But after reloading the entities from objectdb, every empty String has become a new (unique) String object
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Multiple joins did not return expected result

an error? The event variable is defined twice. You should use a unique name for every query variable
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Non Embedded byte[]

"blob" as a unique ObjectDB persisted object?  (The section 4.4 talks about how each ELEMENT
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NullPointerException when using multithreading

of the objectdb jar.  The test application will add one million unique entities to the database.  Based
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Object comparation never matches

] javax.persistence.NoResultException" "No matching results for a unique query (error 782
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Query for objects persisted within the same transaction

I have a question concerning reading uncommited entities with query, within active transaction. For example, I read data from file. Each line contains value of one of entity's attributes but those values are not unique, so it's possible to have a multiple instances of the same entity. To eliminate
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Sample JDO Architecture for Follow Up Questions

. * Probably, all persisted instances will be root objects with unique application IDs (StringIdentity, case