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Q:

What is the difference between ADODC and ADODB?

Answer

- When u build connection with database through coding, then its ADODB.When u build connection with database through ADO component, then its ADODC.


- ADODB is a ActiveXdll and ADODC is a ActiveXcontrol.


- No Need to bind with controls in ADODB whereas in ADODC we should bind with controls.

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Q:

Does VB Supports OOPS Concepts?

Answer

Visual Basic is not support Inheritance and Data binding OOPS Concept 

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Q:

What is the difference between Listview and Treeview?

Answer

Tree view control is designed to display data that is hierarchical in nature, such as organization trees, the entries in an index, the files, directories on a disk. It is often used in conjuction with the List view control, which is used to display the contents of the folder selected in the tree view.


List view control displays data as listitem objects. The control excels at representing subsets of data or discrete objects.The list view property is often used in association with a tree view control.

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Q:

What are the three file types in NT ?

Answer

NTFS, FAT & FAT 32 are the file systems of NT.

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Q:

Define and explain COM?

Answer

COM is the component Object Model is a system whch creates application which are binary form that is language independent , object oriented ,modular and reusable .

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Q:

Explain When is Marshalling not necessary?

Answer

Marshalling is the process of packaging and sending interface method parameters across thread, process or machine boundaries.


It is not necessary when the client and the server are on the same computer.

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Q:

What is IUnknown and what are its three parts?

Answer

IUnknown as an interface of a COM object. Every COM object has to support IUnknown, besides optionally adding other interfaces.


IUnknown is made of QueryInterface, AddRef and Release.

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Q:

How can you have different number of cells for each row of a table?

Answer

By setting the columnSpan property for cells of each row as required.

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