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How do I Create a Duplicate Database in SQL Server?

Published in SQL Server 3 mins read

You can create a duplicate database in SQL Server using the "COPY DATABASE" command or "BACKUP/RESTORE" methods. Let's explore both:

Using the "COPY DATABASE" Command

This method is quick and straightforward, but it creates a copy of the database with the same schema and data as the original.

Steps:

  1. Open SQL Server Management Studio (SSMS).
  2. Connect to the instance of SQL Server where the database you want to duplicate resides.
  3. Expand Databases in the Object Explorer.
  4. Right-click on the source database and select "Tasks" > "Copy Database...".
  5. In the "Copy Database" dialog box:
    • Enter a new name for the duplicate database.
    • Select the destination database server (can be the same server or a different one).
    • Choose the database file location for the duplicate database.
    • Optionally, you can choose to copy only the schema or the data.
  6. Click "OK" to start the copy process.

Using the "BACKUP/RESTORE" Method

This method offers more flexibility and control. You can create a backup of the database and restore it to a different location or server.

Steps:

  1. Back up the source database.
    • Right-click on the source database in Object Explorer and select "Tasks" > "Back Up...".
    • In the "Back Up Database" dialog box:
      • Select the backup destination (e.g., disk, tape).
      • Choose a backup name and description.
      • Select the backup type (e.g., full, differential).
      • Click "OK" to start the backup process.
  2. Restore the backup to a new database.
    • Right-click on the "Databases" folder in Object Explorer and select "Restore Database...".
    • In the "Restore Database" dialog box:
      • Select the source backup device.
      • Choose the backup set to restore.
      • Enter the new database name.
      • Select the destination server and database file location.
      • Click "OK" to start the restore process.

Practical Insights

  • Consider using a different database name for the duplicate. This helps avoid confusion and ensures you have a clear distinction between the original and the copy.
  • Use the "BACKUP/RESTORE" method if you need to duplicate the database to a different server. This ensures that the database is correctly replicated with all its dependencies.
  • If you only need a copy of the database schema, you can use the "COPY DATABASE" method and select "Schema Only" in the dialog box. This will create a new database with the same structure but without any data.

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