Updating sql 2016 name
Foreign keys provide referential integrity between tables, ensuring that write operations on either do not render the related columns orphaned.
Whenever a foreign key column is written, a check must occur of the referenced table to ensure the write operation doesn’t violate the foreign key definition.
When connecting to SQL Server, we use the physical server name for the default instance and physical server name\INSTANCE Name for a named instance.
If you change the physical server name, there is no need to re-install SQL Server to reset the physical server name.
If you are running a database on a SQL Server 2016 server, but it is in an earlier compatibility mode, then no new optimizer features will be applied when queries are executed in your database.
This means that if you upgrade a server from SQL Server 2014 to 2016 and leave a database in compatibility level 120, then query plans will remain the same as they were on the old version.
What does this mean for any existing keys and the queries that write to related columns?
Let’s take a few minutes to run some tests and find out exactly how this new operator performs and compares to what we experienced in previous versions. As a result, when we update them, it is necessary to validate referential integrity for each value added here: These plans each show that each individual update is check for a valid value in the parent table.
SQL Server 2016 includes a variety of query optimizer enhancements.You can follow the below steps to update the SQL Server system metadata which stores the physical server name in sys.servers.The below solution works for default and named SQL instances on a standalone machine (non-clustered).In this tip we look at the steps within SQL Server you need to follow if you change the physical server name for a standalone SQL Server.
As you may know, the internal SQL Server name is based on the physical server name, but changing the physical server name does not update the metadata within SQL Server.In previous versions of SQL Server, this meant that scans or seeks would be performed against the parent table in order to validate a write operation, prior to it being committed.