connecting-to-a-data-source-or-driver.md

title	description	author	ms.author	ms.date	ms.service	ms.subservice	ms.topic
Connecting to a Data Source or Driver	Connecting to a Data Source or Driver	David-Engel	davidengel	01/19/2017	sql	connectivity	conceptual

Connecting to a Data Source or Driver

An application can be connected to any number of drivers and data sources. These can be a variety of drivers and data sources, the same driver and a variety of data sources, or even multiple connections to the same driver and data source.

This section contains the following topics.

• Allocating the Environment Handle

• Declaring the Application's ODBC Version

• Choosing a Data Source or Driver

• Allocating a Connection Handle

• Connection Attributes

• Establishing a Connection

• Driver Manager Connection Pooling

• Disconnecting from a Data Source or Driver

• The Driver Manager's Role in the Connection Process