About database

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FAQ
15

Is ObjectDB scalable? What are its limitations?

ObjectDB is highly scalable and can manage efficiently databases in a wide range of sizes, from ... supports: Database file size up to 128 TB (= 131,072 GB = 134,217,728 MB). Up to 2,147,483,648 entity classes per database file. Up to 2,147,483,648 indexes per database file
Manual
15

Deleting JPA Entity Objects

Existing entity objects can be deleted from the database either explicitly by invoking the remove ... from the database it has to first be retrieved (no matter which way) and then in an active ... (); The entity object is physically deleted from the database when the transaction is committed. Embedded
Forum
15

database version

Is there some way of telling, just from an obd database file, what version it is?   An ObjectDB 2.x database file has no version, at least from the point of view of ObjectDB users. You should be able to use the same database file with different versions of the ObjectDB 2.x software. dmoshal
Issue
15

Embedded Database Replication

As we all know, embedded databases out-perform server databases on every occasion. The problem with embedded databases is that theyre difficult to scale. If I were to create an entire enterprise web application within a single jar file using embedded tomcat and embedded objectdb I would run into
Forum
15

Example database world.odb

Hello! Where can I find classes for example database world.odb? Thanks for the answer.   The source ... ! The attached program exports data from the World database to the standard output in JSON format. You will need google-gson in order to run it. Thanks a lot! How to save to World database persistent objects
Issue
15

Exception on the recovery of a database

I've had this exception on the recovery of a database: [2011-11-06 04:33:41 #19 store] Exception ... with the database? Can you check it with the Doctor? Ok, sounds reasonable. No - there were no problems with the database after recovery but I thought it was worth checking the cause of the exception
Forum
15

How to create a wildfly datasource with dsJndi name to an objectdb database?

Hello everybody, maybe someone can help me creating a wildfly datasource to an objectdb database? I ... are stored in my objectdb database - wildfly has a security domain setup using the DatabaseServerLoginModule Therefore I need a dsJndiName for the objectdb database and I can't find anything how to create
Forum
15

Page size - changing after database creation

Hi, I was wondering, is it safe to change page size after database is created and filled with data ... configuration setting should only affect new created databases, so it should be fine to change it (after a backup, to be on the safe side), but you will have to create a new database file, e.g. by running
Forum
15

Refresh data in application after database data has changed

my application and I want to add a person with the same national number as a person already in the database, my program has to block the creation. So far so good. Now... I have a person in my database ... in the database explorer when the program is running and I want to recreate the person, he keeps
Forum
15

A few questions on object database design

I've been trying to model a database that stores data in an MMORPG. With ObjectDB, a lot of things ... outperforms a lot of other conventional table-oriented databases, but I'm wondering ... entities, then it seems like we are back to the table-oriented databases' design principles