DB4O Queries

Using a DB4O datastore DataNucleus allows you to query the objects in the datastore using the following

  • JDOQL - language based around the objects that are persisted and using Java-type syntax
  • JPQL - language based around the objects that are persisted and using SQL-like syntax
  • Native - DB4Os own type-safe query language
  • SQL - SQL queries of DB4O