PULSE INFOMATICS founder, Matthew Moran, has a couple blogs on integrating Quickbooks with Microsoft SQL Server. Follow the links below:
At Pulse, we specialize in integrating Quickbooks, using Intuit’s SDK, with various databases. The most common is some flavor of SQL Server. However, we also integrate Quickbooks with Microsoft Access, and provide real-time data extraction from Quickbooks directly into Microsoft Excel or Microsoft Word.
This can greatly increase productivity and provide much smoother reporting using data from various sources.