Home/ Questions/Q 737837
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-14T07:46:03+00:00

Our client wants to support both SQL Server and Oracle in the next project.

  • 0

Our client wants to support both SQL Server and Oracle in the next project. Our experience comes from .NET/SQL Server platform. We will hire an Oracle developer, but our concern is with the DataAccess code. Will NHibernate make the DB Engine transparent for us? I don’t think so, but i would like to hear from developers who have faced similar situations.

I know this question is a little vague, because i don’t have Oracle experience, so i don’t know what issues we will find.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You can easily use NHibernate to make your application database-agnostic by following some basic practices:

    • Design your object model first.
    • Do not use any database-specific code. You need somebody with good C# experience, not an Oracle developer. Do not rely on stuff like triggers, stored procedures, etc.
    • Let NHibernate generate the DB schemas at least initially (you can tweak things like indexes later) It will choose the best available datatypes for each DB.
    • Use a DB-agnostic POID generator (hilo or guid) instead of sequences or identity.
    • Try to avoid using SQL. HQL and Linq work fine in 99% of the cases.
    • Avoid NH features that are not supported by all of your target DB (for example, Future, MultiCriteria, etc)

    NHibernate has a great community. You can always ask your questions in http://groups.google.com/group/nhusers besides posting here.

    • 0