Visual Basic Interview Questions and Answers
Referential Integrity (Take care By jet database
Engine). Cascade Delete, Cascade Update is done setting
property of Attributes.?
How to increase the Date corresponding with
Hour, min, sec, month, year, DateSerial, dateadd,
datediff, weekday, datevalue, timeserial,timevalue.
Name some date function?
Dateadd(), Datediff(), Datepart(), Cdate()
What is difference between datagrid and flexgrid?
Datagrid Editable. Flexigrid Non-Editable. (Generally
used for Read only purpose.)
What are two validate with Data Control?
To connect the Data Control with Back end What are all
the properties to be set?
Data source Name, Record Source Name
What are the Technologies for Accessing Database from
DAO, Data Control, RDO, ODBCDIRECT, ADO, ODBC API ,
What is the diff between the Create Object and Get
Create Object - To create an instance of an object.
Get Object To get the reference to an existing object.
What is Mask Edit and why it is used?
Control. Restricted data input as well as formatted data
What is RdExecDirect?
Bypasses the Creation of a stored procedure to execute
the query. Does not apply to Oracle.
Different type of Passing Value?
By value, By ref, Optional, Param Array. Note:- Optional
keyword cannot be used while declaring arguments for a
function using param array.
What are types of binding?
Assigning variable with defined memory space.
Late Binding - Memory size is allotted in later stage.
Ex:- Dim x as object
Early Binding - Memory size is allotted while declaring
itself. New Key word is important.
Ex:- Dim x as New Object