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Is ObjectDB scalable? What are its limitations?

ObjectDB is highly scalable and can manage efficiently databases in a wide range of sizes, from a few Kilobytes to hundreds of Gigabytes and even Terabytes. ObjectDB can be used in small embedded single user applications as well as in heavy loaded multi threaded multi user applications. ObjectDB

Database Doctor

. Modifying the database file externally not through ObjectDB (e.g. by malicious software such as ... file (e.g. my.odb as shown above). Diagnosis results are printed to the standard output. Running

Is ObjectDB better than Object Relational Mapping (ORM)?

As noted above, using ObjectDB instead of a relational database and ORM combination is easier and leads to better performance. ORM tools, however, are very useful where the use of a relational database is mandatory (e.g. as a result of a customer request or when a new application is developed

What is ObjectDB?

convert objects to records/records to objects using SQL or ORM, as opposed to when using relational database systems (RDBMS), such as Oracle, DB2, SQL Server or MySQL.

JPA Annotations for Access Modes

Persistence fields can either be accessed by JPA directly (as fields) or indirectly (as properties and get/set methods). JPA 2 provides an annotation and an enum for setting the access mode: More details are provided in chapter 2 of the ObjectDB manual.

Step 1: Create a Maven Web Project

that the Create a simple project checkbox is disabled and click Next. Enter maven-archetype-webapp as ... is installed, by right clicking the project node and checking that the Run As > Run on Server command

Step 1: Create a Java EE 6 Web Project

a Project Name (e.g. Guestbook). Select GlassFish Server Open Source Edition 3 (Java EE 6) as the Target runtime. Note: You may have to add GlassFish 3 as a new server by clicking the New Runtime

Java EE 6 JPA Tutorial - Eclipse Project

directory as Root Directory and press ENTER. Select the project and click Finish. Run the project in Eclipse: Right click the project node and select Run As > Run On Server. (this command is available

Spring MVC JPA Tutorial - Eclipse Project

... > Maven > Existing Maven Projects and click Next. Select the guestbook-spring directory as Root ... click the project node and select Run As > Run On Server. (this command is available only if Maven

Step 2: Define a JPA Entity Class

) and selecting New > Class. Enter guest as the package name - use exactly that case sensitive package name. Enter Guest as the class name - use exactly that case sensitive class name. Click Finish

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