Generic Variable: Create Object Ex:-Ole-Automation . No need refer the object library. Specific Variable: Binding Procedure Early and Late Binding ( Can be Remove from the Memory).

Advantages?

Properties – Public variable of a Class Method – Public procedure of a class

Similarly to arrays but is preferred over an array because of the following reasons. 1. A collection objects uses less Memory than an array. 2. It provides methods to add and delete members. 3. It does not required reason statement when objects are added or deleted. 4. It does not have boundary limitations.

Microsoft ODBC driver will support all the methods and properties of Visual Basic. Where as the Oracle not.

Methods Events Begin Trans Validate Commit Trans Reposition Rollback Trans Error Cancel Query Complied Refresh Update Controls Update row