There are several basic features missing such as a standard way to define a primary key using database sequence and EJBQL is very limited.
许多基础的特征未考虑到，比如使用数据库序列和EJBQL定义一个主键的标准方法就非常有限。
There are several basic features missing such as a standard way to define a primary key using database sequence and EJBQL is very limited.
许多基础的特征未考虑到，比如使用数据库序列和EJBQL定义一个主键的标准方法就非常有限。
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