> For the complete documentation index, see [llms.txt](https://eleven-fifty-academy.gitbook.io/sql-101-basics/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eleven-fifty-academy.gitbook.io/sql-101-basics/part-5-resources/5.0-resources.md).

# 5.0: Resources

Here is a list of websites that were referenced for this curriculum unit:

* <http://www.vertabelo.com/blog/technical-articles/crow-s-foot-notation>
* <https://www.youtube.com/watch?v=TpKcAmaaBts>
* <https://www.visual-paradigm.com/guide/uml-unified-modeling-language/uml-aggregation-vs-composition>
* <https://www.lucidchart.com/pages/ER-diagram-symbols-and-meaning>
* <https://msdn.microsoft.com/en-us/library/dd409416.aspx>
* <https://www.codeproject.com/Articles/878359/Data-modelling-using-ERD-with-Crow-Foot-Notation>
* <https://softwareengineering.stackexchange.com/questions/315565/are-crow-feet-notation-and-uml-notation-same>
* <https://www.ntu.edu.sg/home/ehchua/programming/sql/SampleDatabases.html>