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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
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ObjectDB Website - Terms and Conditions of Use

representations concerning the accuracy, likely results, or reliability of the use of the materials
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Date and Time in JPQL and Criteria Queries

Date and time expressions may appear in JPQL queries: as date and time literals - e.g. {d '2011-12-31'}, {t '23:59:59'}. as parameters - when date and time values are assigned as arguments. as path expressions - in navigation to persistent date and time fields. as results of predefined JPQL current
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Database Doctor

file (e.g. my.odb as shown above). Diagnosis results are printed to the standard output. Running
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Database Server

, which is much more efficient. As a result, embedded mode should be preferred when possible. For example
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Strings in JPQL and Criteria Queries

String values may appear in JPQL queries in various forms: as string literals - e.g. 'abc', ''. as parameters - when string values are assigned as arguments. as path expressions - in navigation to persistent string fields. as results of predefined JPQL string manipulation functions. LIKE - String
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JPA / JDO Class Enhancer

. The result output message lists the classes that have been enhanced: [ObjectDB 2.8.0] 3 persistable
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Java EE JPA Tutorial - Maven Project

and run the result application as a Maven project: Java EE JPA Web App - Maven Project (7KB) If Maven
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Step 4: Add a Controller Class

) guestDao.persist(new Guest(name)); // Prepare the result view (guest.jsp): return new
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JPA Web App Tutorial - Maven Project

the result application as a Maven project: JPA Web App - Maven Project (6KB) If Maven is installed

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