ObjectDB ObjectDB

Internal Website Search

21-30 of 200 resultsRefresh

Schema Update

. The default configuration file contains an empty <schema> element. If the <schema> element is not empty ... serves as a container of <class> subelements for renaming classes and fields in that package ... ) because the package name is already specified in the containing <package> element. The value of the new

Server User List

configuration file contains the following <users> element: <users> <user username="admin" password="admin ... > Every <user> element may contain one or more <dir> subelements indicating which paths ... separated string value may contain the following permissions: access - permission to open a database

GROUP BY and HAVING clauses

cell contains the initial letter as a String object, the second cell contains the number of countries in that letter's group as a Long object and the third cell contains the distinct number ... that contains an aggregate expression in the SELECT clause is considered a grouping query

Database Explorer

. Running the Explorer The ObjectDB Explorer is contained in the explorer.jar executable jar file ... , which can be opened using the Tools > Options... menu command. The [Options] dialog box contains three tabbed pages: [General], [Fonts] and [Views]. The [General] Page The [General] page contains

JPA Entity Fields

transient4; // not persistent because of @Transient } The above entity class contains ... . When an entity object is stored in the database every persistent field must contain either null or a value ... Fields Inverse (or mapped by) fields contain data that is not stored as part of the entity in

Database Transaction Replayer

default, the recording directory is generated in the directory that contains the database file ... contains two types of files: Backup files - with names of the form <transaction-id>.odb Recording ... , contains database operations that have been recorded after that transaction. Recorded operations

Privacy Policy

on Your computer, mobile device or any other device by a website, containing the details ... may contain small electronic files known as web beacons (also referred to as clear gifs, pixel tags ... to Other Websites Our Service may contain links to other websites that are not operated by

JPA Persistence Unit

classes in the JAR that contains the persistence.xml file (if it is packed) are registered automatically ... classes under the classpath root directory that contains the META-INF/persistence.xml file ... are available only when the containing classes become known to ObjectDB, for example when a first instance of the class is stored in the database.

ObjectDB Website - Terms and Conditions of Use

from using or accessing this site. The materials contained in this web site are protected by ... any software contained on ObjectDB Software's web site; remove any copyright or other proprietary ... changes to the materials contained on its web site at any time without notice. ObjectDB Software does

JPA Primary Key

of other persistable types are always stored as part of their containing entity objects and do not ... are defined in an embeddable class. The entity contains a single primary key field that is annotated with @EmbeddedId and contains an instance of that embeddable class. When using this form

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
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support