orm.xml and persistence.xml

[kumar mahesh]

Please explain the difference between these two xmls?. What is the purpose of orm.xml?.

[Moayad Abu Jaber]

persistence.xml used to define the JDBC driver and connectivtey with database additional that you define the unit name.

orm.xml you can skipped it and use the annotation insted of that.
orm.xml used to mapping object to database.

best regards,

[Fei Wong]

hi juz wan to ask can we use other name like abc.xml instead of orm.xml?

Thanl you very much

[Netra Matari]

persistence.xml is for storing database details used behind hibernate. Mostly you have one persistence.xml file in your application which is common for all entities.

orm.xml is mostly used per entity. For employee entity, employee-orm.xml. For Manager entity, manager-orm.xml etc.

Note that i have used the term "mostly". Its bacuse you can have one orm file for all entirties but that is not a good practice.