Thingies

notes/8.md

@@ -42,4 +42,9 @@ WHERE
 
 Bear in mind that how to define the strategy to determine what should be loaded is up to the engineer. Any SQL can be placed within the `if is_incremental()` block. In the example above, we have a date field that easily signals what's the most recent date the table has currently seen.
 
-## 
+## Sources and seeds
+
+Seeds are local files that you upload to a DWH from dbt. You place them as CSVs in the `seeds` folder.
+
+
+Sources are an abstraction layer on top of the input tables. They are not strictly necessary, but can help make the project more structured. To create sources, you create a `sources.yml` file and place it in the `models` dir.

notes/sections1-7.md

@@ -105,12 +105,4 @@ dbt makes sense nowadays because the modern data stack makes transformations wit
 
 - `dbt_project.yml`: header of the project, with stuff like versioning, the default profile for the project, the paths to different folders, etc.
 
-This is a pic of the data flow we are going to build: ![img.png](../images/dataflow_overview.png)
-
-## Sources and seeds
-
-Seeds are local files that you upload to a DWH from dbt. You place them as CSVs in the `seeds` folder.
-
-
-Sources are an abstraction layer on top of the input tables.
-
+This is a pic of the data flow we are going to build: ![img.png](../images/dataflow_overview.png)