What does a database connection do?

Should I keep a database connection open?

Absolutely it is safe to do this. This is how client-server applications work. If you are using a three-tier application, the application server will keep a pool of connections open anyway.

What is a connection within the data in a database?

A data connection is used when you are analyzing massive amounts of data and you need to keep the underlying data in the database (in-db) rather than bringing it into Spotfire's internal data engine. However, you can also select to import data tables from relational data connections.

What is needed to connect to a database?

To connect to a database, you need to provide a valid JDBC driver for your database in the NetBeans IDE.1Ensure that your database is running.2Right-click the Databases node and choose New Connection.23 Working and Connecting with Databases - Oracle Help Center

How does a database connection string work?

The connection string is an expression that contains the parameters required for the applications to connect a database server. In terms of SQL Server, connection strings include the server instance, database name, authentication details, and some other settings to communicate with the database server.