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In an Internet implementation, it resides on a Web server and is instantiated by the ADISAPI component. DataFactory object provides read and write access to specified data sources, but doesn't contain any validation or business rules logic. DataControl version by default. DataFactory serves as a generic server-side business object. DataFactory with a custom business object. DataFactory methods, such as Query and CreateRecordset. This is helpful if you want to add functionality to your business objects, but take advantage of existing Remote Data Service technologies.

Parameter Object A Parameter object represents a parameter or argument associated with a Command object based on a parameterized query or stored procedure. Remarks Many providers support parameterized commands. These are commands where the desired action is defined once, but variables (or parameters) are used to alter some details of the command. For example, an SQL SELECT statement could use a parameter to define the matching criteria of a WHERE clause, and another to define the column name for a SORT BY clause.

For a complete list of ADO errors, see the ADO Error Codes topic. You can read an Error object s properties to obtain specific details about each error, including the following: • The Description property, which contains the text of the error. • The Number property, which contains the Long integer value of the error constant. • The Source property, which identifies the object that raised the error. This is particularly useful when you have several Error objects in the Errors collection following a request to a data source.

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ADO Programme's Reference

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