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Update-DatabaseSchema

Use the Update-DatabaseSchema cmdlet to upgrade the database schema for one or more databases after an Exchange software update that includes database schema updates is installed on Mailbox servers in a database availab… Exchange PowerShell reference

From the Exchange PowerShell reference 5 parameters Its page in the reference

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Parameters

5 in the Exchange PowerShell reference
-IdentityThe Identity parameter specifies the mailbox database for which you want to set one or more attributes.
-MajorVersionThis parameter is reserved for internal Microsoft use.
-MinorVersionThis parameter is reserved for internal Microsoft use.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.