Visual Basic 6.0 Derived from BASIC Developed by Microsoft in 1998 An event driven programming language Associated with a development environment

Inheritance Implementation Inheritance is not support Interface inheritance is provided through multiple ActiveX interfaces. method and operator overloading is not supported. methods can not be overridden.

Message Binding Supports early and late binding Early binding : access to the member of an object can be resolved at compile time Late binding: the existence of the member is checked at run time Late binding is much slower

Reuse ASP scripts for writing functions and procedures Concept of VB COM family of COM technologies includes COM+, Distributed COM (DCOM) and ActiveX® Controls. ActiveX DLLs ActiveX DLLs are COMponents where you can hide your code call it in your ASP and distribute with your application

Information Hiding declare attributes and behaviors with the Private keyword Public keyword : other objects can access those properties and methods yet know nothing of their actual implementation

Database Support Microsoft Access, dBase, Excel, MySQL, SQLserver, Oracle Microsoft ODBC Drivers Data Access Objects Remote Data Objects ActiveX Data Objects Access uses OLE DB or ADO

IDE Visual Studio 6.0 Standalone applications Web application Visual Studio 2005 Does support web development By using Active Server pages for Frontend Creating dll’s for back end

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Usability Easy to us and accessible Provides Rapid Application development Best bet for building deep prototyping quickly

Reality Visual Basic 6.0 was generally available in January 1999 Mainstream support ended March 31, 2005 Visual Basic 6.0 will no longer be supported starting March 2008 Microsoft Visual Basic Learning Edition(v 6.0) costs $ Microsoft Visual Studio 6.0 Enterprise Edition costs $983.98

Pros and cons Pros: Increased speed of development with the use of CASE tools, and other techniques. Larger emphasis on simplicity and usability of GUI design Cons: Does not have IntelliSense Does not support web services Not completely Object Oriented Programming Language