This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Each database has its own characteristics and the same SQL statements will not necessarily work on all of them.
In that case, it it seems better to write code for each database instead of one big class that can handle all databases.
Is it possible to make your code database agnostic ? If so, how can we do that ?