Introduced with earlier versions of VB, DAO was built specifically for the Microsoft Jet engine . It is highly efficient for local Microsoft Access databases but lacks the flexibility needed for more complex, remote systems.
Modern VB.NET applications primarily use the framework, which provides a disconnected architecture for high-performance data manipulation. Database Access with Visual Basic - Jeffrey P. McManus Database Access with Visual Basic
Developed to address DAO's limitations, RDO provided an object-oriented interface for connecting to remote relational databases via ODBC . Introduced with earlier versions of VB, DAO was
Represented a shift toward a platform-neutral model, using OLE DB to access various data sources, including SQL Server, Oracle, and even non-relational sources like Excel. 2. Core Connectivity Methods in VB.NET Introduced with earlier versions of VB