Microsoft platform and database technologies interview questions

• 3 main differences between flexgrid control and dbgrid control
• ActiveX and Types of ActiveX Components in VB
• Advantage of ActiveX Dll over Active Exe
• Advantages of disconnected recordsets
• Benefit of wrapping database calls into MTS transactions
• Benefits of using MTS
• Can database schema be changed with DAO, RDO or ADO?
• Can you create a tabletype of recordset in Jet - connected ODBC database engine?
• Constructors and destructors
• Controls which do not have events
• Default property of datacontrol
• Define the scope of Public, Private, Friend procedures?
• Describe Database Connection pooling relative to MTS
• Describe: In of Process vs. Out of Process component. Which is faster?
• Difference between a function and a subroutine, Dynaset and
• Snapshot,early and late binding, image and picture controls,Linked Object and Embedded Object,listbox and combo box,Listindex and Tab index,modal and moduless window, Object and Class,Query unload and unload in form.
• Declaration and Instantiation an object?
• Draw and explain Sequence Modal of DAO
• How can objects on different threads communicate with one another?
• How can you force new objects to be created on new threads?
• How does a DCOM component know where to instantiate itself?
• How to register a component?
• How to set a shortcut key for label?
• Kind of components can be used as DCOM servers
• Name of the control used to call a windows application
• Name the four different cursor and locking types in ADO and describe them briefly.
• Need of zorder method, no of controls in form, Property used to add a menus at runtime, Property used to count number of items in a combobox,resize a label control according to your caption.
• Return value of callback function, The need of tabindex property.
• Thread pool and management of threads within a thread pool.
• To set the command button for ESC, Which property needs to be changed?
• Type Library and what is it’s purpose?
• Types of system controls, container objects, combo box
• Under the ADO Command Object, what collection is responsible for input to stored procedures?
• VB and Object Oriented Programming
• What are the ADO objects? Explain them.