What is Dataware Control?

Visual Basic Interview Questions and Answers

(Continued from previous question...)

91. What is Dataware Control?

Any control bound to Data Control.
Ex:- Textbox, Check Box, Picture Box, Image Control, Label, List box, Combo Box, DB Combo,

92. What is the default model of the form? And what is it number?

93. Why we need OLE-Automation? Advantages?

94. What methods are used for DBGrid in unbound mode?

AddData, EditData, Readdata, WriteData.

95. 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.

96. What is the max size allowed for Max Text box length.

32,000

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Other Interview Questions

• How do you register a component?
• Name and explain the different compatibility types when creating a COM component
• Why is it important to use source control software for source code?
• What two methods are called from the ObjectContext object to inform MTS that the transaction was successful or unsuccessful?
• What is the tool used to configure the port range and protocols for DCOM communications?
• What does Option Explicit refer to?
• What are the different ways to Declare and Instantiate an object in Visual Basic 6?
• Name the four different cursor types in ADO and describe them briefly.
• Name the four different locking type in ADO and describe them briefly.
• Describe Database Connection pooling (relative to MTS )?
• What are the ADO objects?
• Under the ADO Command Object, what collection is responsible for input to stored procedures?
• What are some benefits of using MTS?
• What is the benefit of wrapping database calls into MTS transactions?
• Describe and In Process vs. Out of Process component. Which is faster?
• What are the main components of the ADO object model? How are they used?
• Can We create CGI scripts in VB??
• Dim x, y as integer. What is x and y data type?
• What is Centralization Error Handling?
• What is frx?
• What is the DLL required for running the VB?
• Why we use Treeview Control?
• Handling Error in Calling chain.
• In project properties if we set Unattended what is it mean?
• What is the size of the variant data type?
• What is view Port?
• What are the different types of error?
• What is the diff between the Std and Class Module?
• What is Mixed Cursors?
• Drag and Drop state numbers and functions?
• What are the Style Properties of Combo Box?
• What are the Style properties of List Box?
• What are the record set types?
• Different type of Instantiation?
• What is the different between Microsoft ODBC Driver and Oracle OBDC Driver?
• Diff type of Datatypes?
• What is keyword used to compare to objects?
• How can we call Stored procedure of Back End in RDO and ADO ?
• What is the max size allowed for Extension in Visual Basic?
• Referential Integrity (Take care By jet database Engine). Cascade Delete, Cascade Update is done setting property of Attributes.?
• What are the Technologies for Accessing Database from Visual Basic?set?
• What is Dataware Control?
• Record set types and Number available in VB?
• Visual Basic Interview Questions only