What is a connection in SQL?

Question

A database connection is a SQL Developer object that specifies the necessary information for connecting to a specific database as a specific user of that database. You must have at least one database connection (existing, created, or imported) to use SQL Developer.

What is a connection in a database?

A database connection is a facility in computer science that allows client software to talk to database server software, whether on the same machine or not. A connection is required to send commands and receive answers, usually in the form of a result set. Connections are a key concept in data-centric programming.

How do you create a connection in SQL?

On the Tools menu, click Data Connections. In the Data Connections dialog box, click Add. In the Data Connection Wizard, click Create a new connection to, click Receive data, and then click Next. On the next page of the wizard, click Database (Microsoft SQL Server or Microsoft Office Access only), and then click Next.

What is a connection string used for?

Applications use connection strings to identify the server instance and database to connect to and to determine what driver, login, etc. to use to connect to the SQL Server instance. Typically, the connection string will be stored in a configuration file somewhere within the application or web server.

What is SQL Server connector?

The Microsoft SQL Server or Azure SQL Microsoft Graph connector allows your organization to discover and index data from an on-premises SQL Server database, or a database hosted in your Azure SQL instance in the cloud.

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