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ObjectDB Object Database Features

from failure by using a recovery file and double writing. Additional recovery layer - supports ... Level locking. Lock modes: READ/WRITE, OPTIMISTIC/PESSIMISTIC. Database Tools and Utilities ObjectDB
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javax.persistence.LockModeType

.OPTIMISTIC_FORCE_INCREMENT. The lock mode type values LockModeType.READ and LockModeType.WRITE ... .PESSIMISTIC_WRITE, and LockModeType.PESSIMISTIC_FORCE_INCREMENT are used to immediately obtain long ... , LockModeType.PESSIMISTIC_WRITE, and LockModeType.PESSIMISTIC_FORCE_INCREMENT are the following
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Database Replication and Clustering

/ Write operations. The other (slave) nodes in the cluster manage identical copies of the same database
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ObjectDB License Agreement [ver. 2.0.4]

of this agreement will be binding, unless in writing and signed by an authorized representative of each party
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What are the main benefits of using ObjectDB?

. Less (and more simple) code to write, debug and test, as well as a much easier learning curve leads
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ObjectDB - Object Database for Java (JPA/JDO)

relational databases, JDBC, drivers, tables, records, ORM tools and mapping - start writing more effective
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[ODB1] Chapter 1 - About ObjectDB

makes it possible to write clean Java code, but still requires some familiarity with relational ... objects in a database, visually, without writing a single line of code. Many object databases do not
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javax.jdo.spi.PersistenceCapable

has been enhanced to call the jdoStateManager on read if the jdoFlags setting is not READ_OK or READ_WRITE_OK ... to call the jdoStateManager on read if the jdoFlags setting is not READ_OK or READ_WRITE_OK. Since: JDO 1.0 byte CHECK_WRITE If jdoFieldFlags for a field includes CHECK_WRITE, then the field has been enhanced
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[ODB1] Chapter 8 - ObjectDB Server

specifies a directory to which the server writes its log files. Appropriate file system permissions
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[ODB1] Chapter 9 - ObjectDB Explorer

from the auto completion list when you write the query filter and also when you fill the ordering field

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
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