ActiveX Data Object. ADO can access data from both flat 
files as well as the databases. I.e., It is encapsulation 
of DAO, RDO, and OLE that is why we call it as OLE-DB 
Technology.
Objects are Connection, Record Set, Command, Parameter, 
field, Error, Property. 

Datagrid ? Editable.
Flexigrid ? Non-Editable. (Generally used for Read only 
purpose.)

For Ex:
If(Msgbox("Do you want to delete this Record",VbYesNo)
=VbYes)Then End if

for example
if msgbox("Are You Sure",vbyesno)=vbyes then
con..
else
con..
endif

if msgbox("Are You Sure",vbyesno)=vbyes then
   Condition statement
else
   Condition statement
endif

Screen.MousePointer = VBHourGlass/VBNormal.

If u want to change the mouse pointer when the form is 
running then in the form load event write this coading part

Private Sub Form_Load()
Form1.MousePointer = 2
End Sub
   for the mouse pointer to be a cross mark we can change 
these values from 0 to 6 for different styles

yes

Vbrun300.dll

Predefined, Custom, User Defined.

Simple ?Single Select , Extended. ? Multiple Select.

Standard & Checked

Simple, Dropdown list ? We can type and select.
Dropdown Combo ? Only Drop Down.

Instance of specific copy of a class with its own settings 
for the properties defined in that class.

Its Scope will be available through out the life time.

Static variables retain values for the subsequent calls to 
the procedure

Static that means can not change. Variable that can not 
allow to change value along a life of the project.

Create Object - To create an instance of an object.
Get Object ? To get the reference to an existing object.