Webservice with Database access

Hi all,
I have a requirement in which my client will send some data through webservice and i will store that in oracle database, i want to know best approach to handle this. Following are some approches
1- Develop webservice with EJB back
2- Develop webservice with POJO back
3- Develop webservice with service lifecycle and get datsoource/connection from servicelifecycle implementation
4- Deavelop a webservice with DAO class and initialize DAO in constructor of webservice
Please recommend wich approach will be better, please also suggest any other approach.
Regards,
imran

I think the best approach is to keep your web service layer isolated from the data access layer. Hence i would create a business service or business delegate kind of layer which will be called from web service. Business service then calls the DAO methods. For data access layer you have multiple choice of using hibernate, JPA, JDBC, etc based on your requirement. I would prefer to use some sort of dependency injection for injecting the objects in various layers.
Hope this helps.
Divyesh

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