Foreign key relationship enforce for replication

Foreign Key Relationships Dialog Box | Microsoft Docs

foreign key relationship enforce for replication

I see it all the time in sp_Blitz warnings of “Foreign Keys or Check log shipping subscribers, replication subscribers, database mirrors, AG replicas, etc. overhead of enforcing foreign key relationships inside the database. The times I've de-enforced foreign keys for a while are when there are problems with data and fixing them is hidered by relationship checks. Hi all, There is a setting in the design on Foreign Keys called "Enforce For Replication". We need to set this on every foreign key before creating a publication.

After making the changes, click OK. At this point we are back to the first Foreign Key screen that we saw. If you scroll down on the right pane, we can see the Delete and Update rules as shown in the image below.

SQL Server Foreign Keys (Page 2 of 3)

Select the appropriate values from the dropdown list. You can see below there are two other options in the GUI as shown below: Enforce For Replication - if you are using replication and don't want the foreign keys enforced at the subscriber for the replicated data you would select No.

foreign key relationship enforce for replication

Enforce Foreign Key Constraint - if you do not want to the foreign key to be checked you would select No. Setting this to No defeats the purpose of having a foreign key setup. To edit or define these values, click the ellipsis … to the right of the property field.

How to create a SQL Server foreign key

Foreign Key Base Table Shows which table contains the column acting as a foreign key in the selected relationship. Foreign Key Columns Shows which column acts as a foreign key in the selected relationship.

foreign key relationship enforce for replication

Identity Category Expands to show the property fields for Name and Description. Name Shows the name of the relationship.

foreign key relationship enforce for replication

When a new relationship is created, it is given a default name based on the table in the active window in Table Designer. You can change the name at any time.

foreign key relationship enforce for replication

Description Provides a place to describe the relationship. To write a more detailed description, click Description and then click the ellipsis This web site uses cookies. By using the site you accept the cookie policy. These constraints define relationships between two tables, enforcing referential integrity to avoid orphaned rows in normalised tables. Page 1 Adding a Foreign Key to a Database In this article we will consider two methods of adding foreign keys to a database.

We will add the foreign keys to tables in the JoBS tutorial database. This has been created over the course of the tutorial so far.

sql server - When Creating a Foreign Key Relationship - Database Administrators Stack Exchange

To prepare the tutorial database, download and run the script via the link at the start of this page. This will create the database and some sample data. We will start by adding a new relationship between customers and their addresses.

foreign key relationship enforce for replication

The CustomerAddresses table already includes a column named CustomerNumber that defines which customer each address belongs to. This column will be the foreign key that is related to the Customers table's primary key.

To begin, right-click the CustomerAddresses table in the Object Explorer and choose "Design" from the menu that appears. The table designer will be displayed.

Foreign Key Relationships Dialog Box

To create a new foreign key, choose "Relationships You can also click the Relationships toolbar button. The "Foreign Key Relationships" dialog box will be displayed. Initially this will contain no foreign keys as none have yet been created.