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In computing, Microsoft's ActiveX Data Objects (ADO) comprises a set of Component Object Model (COM) objects for accessing data sources. A part of MDAC (Microsoft Data Access Components), it provides a middleware layer between programming languages and OLE DB (a means of accessing data stores, whether databases or not, in a uniform manner).
Microsoft Data Access Components (MDAC; also known as Windows DAC) is a framework of interrelated Microsoft technologies that allows programmers a uniform and comprehensive way of developing applications that can access almost any data store. Its components include: ActiveX Data Objects (ADO), OLE DB, and Open Database Connectivity (ODBC).
Visual Basic 2.0 was released in November 1992. The programming environment was easier to use, and its speed was improved. Notably, forms became instantiable objects, thus laying the foundational concepts of class modules as were later offered in VB4. Visual Basic 3.0 was released in the summer of 1993 and came in Standard and Professional ...
The language provides a user interface in the form of UserForms, which can host ActiveX controls for added functionality. Inter-process communication automation includes the Dynamic Data Exchange (DDE) and RealTimeData (RTD) which allows calling a Component Object Model (COM) automation server for dynamic or realtime financial or scientific ...
An object represents a single entity, such as a user, computer, printer, or group, along with its attributes. Some objects may even contain other objects within them. Each object has a unique name, and its definition is a set of characteristics and information by a schema, which determines the storage in the Active Directory.
Various other technologies from Microsoft and others make this object-oriented aspect more apparent by using an OOP language such as C++ — see Microsoft Foundation Class Library (MFC), Visual Component Library (VCL), GDI+. Of note, Windows 8 provides the Windows API and the WinRT API, which is implemented in C++ [13] and is object-oriented by ...
Visual Basic supported the rapid application development (RAD) of graphical user interface (GUI) applications, access to databases using Data Access Objects, Remote Data Objects, or ActiveX Data Objects, and creation of ActiveX controls and objects. Visual Basic was used to develop proprietary in-house applications as well as published ...
In the earlier years of .NET development, a number of third-party object–relational libraries emerged in order to fill some perceived gaps in the framework. [32] [33] [34] As the framework evolved, additional object–relational tools were added, such as the Entity Framework and LINQ to SQL, both introduced in .NET Framework 3.5. These tools ...