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To alter a database, once it's created

Code: SQL Server

Alter database DatabaseName Modify Name = NewDatabaseName

Alternatively, you can also use system stored procedure

Code: SQL Server

   Execute sp_renameDB 'OldDatabaseName','NewDatabaseName'

Graphically using SQL Server Management Studio (SSMS)

Step 1: Right click on the database name, then press rename.

Step 2: Write New Database Name and Press Enter

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