Hi @Avyayah ,
There is no SQL server 2003. Please using select @@version to check your SQL server version.
There are several ways to copy a database:
•Using the Copy Database Wizard
•Back and restore databases
Refer to MS document Copy Databases to Other Servers to get more.
Please notice the database compatibility, when you restore a database to a newer version. Refer to ALTER DATABASE (Transact-SQL) Compatibility Level.
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