1. What is the size of the variant data type?
The Variant data type has a numeric storage size of 16 bytes and can contain data up to the range of a Decimal, or a character storage size of 22 bytes (plus string length),and can store any character text.

2. What are the Style properties of List Box?
Simple Single Select , Extended. Multiple Select.

3. What is the diff between RDO and ADO?
RDO is Hierarchy model where as ADO is Object model. ADO can access data from both flat files as well as the data bases. I.e., It is encapsulation of DAO, RDO , OLE that is why we call it as OLE-DB Technology.

4. What is Seek Method which type of record set is available this?
Only in DbOpenTables.
Syntax: rs.index = empno
rs.seek = , 10
If with our setting the rs.index then run time error will occur.

5. What is MDI form?
MDI Styles?

6. What is Parser Bug?
It is difficult to use database objects declared in a module from within a form.

7. How can we call Stored procedure of Back End in RDO and ADO ?
In RDO We can call using RDO Query Objects.
In ADO We can call using Command Objects.

8. What is FireHouse Cursors?
Forward Only Some time Updateable

9. Name some date function?
Dateadd(), Datediff(), Datepart(), Cdate()

10. What is RdExecDirect?
Bypasses the Creation of a stored procedure to execute the query. Does not apply to Oracle.

11. What is ADO? What are its objects ?
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.

12. What is the max size allowed for Msgbox Prompt and Input Box?
1024