New answers tagged database
You will get all the information about the migrating & attaching all SharePoint databases from new SQL location\instance from below given link. Move all databases in SharePoint 2013
You must use cliconfg.exe on each SharePoint server to point the 'old' SQL Server name (and instance if applicable) to the new SQL Server name (and instance if applicable). So if you had an old SQL Server name of OLDSQL and a new one of NEWSQL, you would run cliconfg.exe on each SharePoint server, go to the Alias tab, add an alias named OLDSQL. Set it to ...
Unfortunately no, that is one of the drawbacks. Each time you create an app, the database is actually created in azure. There is no way to separate user’s ability to edit and read various tables. In other words, it does not support role based permissions.
If your database really was a higher than your SharePoint farm, then you couldn't add it--you would receive a schema error. Your databases are just from an older CU, and you need to run the PSConfig on your SharePoint servers to update the schema of the databases to match that of the current SharePoint build. Use Upgrade-SPContentDatabase: ...
You can create different external systems for each of the database server. And use the external system while creation ECT's. I am not use using IP vs Name has any impact as both should resolve as expected.
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