After a publication is created, you can use column filtering to drop a column from an existing publication, but retain the column in the table at the Publisher, and also to include an existing column in the publication.
For other changes, such as adding a new column to a table and then adding it to the published article, use schema change replication.
For more information on the upcoming change, we invite you to read our blog post.
To represent database-table data in Python objects, Django uses an intuitive system: A model class represents a database table, and an instance of that class represents a particular record in the database table.
Primary keys are not required for tables in merge publications, but if a primary key column is present, it cannot be filtered.The API works similar to a “backward” one-to-many relationship, above.One difference is in the attribute naming: The model that defines the Other object-relational mappers require you to define relationships on both sides.(Behind the scenes, this functionality is implemented by Python descriptors.This shouldn’t really matter to you, but we point it out here for the curious.) Django also creates API accessors for the “other” side of the relationship – the link from the related model to the model that defines the relationship.