True single sourcing implies there is only one location where content is edited - all other locations are referencing this unique item. Nowadays, many companies are using a CCMS to implement this winning strategy.
But we are not doing this with product data. Every new version of a product requires copies of the same procedures, just because some of the data fields are different. Using variables for all variable data becomes impossible as the number of data items is growing. Also, the technical author still needs to copy the data item from the database into the variable. Also, each data item must be checked before publishing, as the data may have changed in the product database.
This presentation shows how data queries into a variety of databases can be added to structured content, allowing a simple refresh in the editor to make the content show the latest updated data items. Instead of adding all the product-specific data to the appendix, it becomes possible to pull the various data items into the procedure text, while keeping the reusability of the procedure.