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A programmer can directly access ADO objects to manipulate data, or can send an SQL query to the database via several ADO mechanisms. ADO is made up of nine objects and four collections. The collections are: Fields: This collection contains a set of Field objects. The collection can be used in either a Recordset object or in a Record object.
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).
DAO were originally called "VT Objects.: DAO 1.0 came up in November 1992 as part of Access 1.0. In version 3.5 it was able to bypass the Jet engine all together and directly access ODBC data sources, including Microsoft SQL Server and other enterprise database systems.
The server object allows connections to databases (ADO), filesystem, and use of components installed on the server. < % Dim oAdoCon , oAdoRec , oAdoStm , oCdoCon , oCdoMsg , oSciDic , oSciFsm , oMswAdr Set oAdoCon = Server .
A recordset is a data structure that consists of a group of database records, and can either come from a base table or as the result of a query to the table. The concept is common to a number of platforms, notably Microsoft's Data Access Objects (DAO) and ActiveX Data Objects (ADO). The Recordset object contains a Fields collection, and a ...
ADOdb is a database abstraction library for PHP, originally based on the same concept as Microsoft's ActiveX Data Objects.It allows developers to write applications in a consistent way regardless of the underlying database system storing the information.
ADO.NET Entity Framework uses the EDM to actually perform the mapping letting the application work with the entities, while internally abstracting the use of ADO.NET constructs like DataSet and RecordSet. ADO.NET Entity Framework performs the joins necessary to have entity reference information from multiple tables, or when a relationship is ...
These queries and Access tables can be referenced from other programs like VB6 and .NET through DAO or ADO. From Microsoft Access, VBA can reference parameterized stored procedures via ADO. The desktop editions of Microsoft SQL Server can be used with Access as an alternative to the Jet Database Engine.