> ## Documentation Index > Fetch the complete documentation index at: https://docs.dolphinflashcards.com/llms.txt > Use this file to discover all available pages before exploring further. # Architecture Diagrams We have several architecture diagrams, which aim to help you understand the site ## Database Design This image shows the database design for Dolphin Flashcards, each block showing a different collection in the NoSQL Firebase database. Duplicated data is shown in red, which may offer some oppurtunity for simplification, although maybe not. An underline shows a foreign key, and bold shows a primary key. Feel free to click the image to make it larger Database Design ## Overall Architecture This diagram shows the overall architecture for various parts of Dolphin Flashcards Layered Architecture ## Deployed Infrastructure This diagram shows how Dolphin Flashcards is currently deployed Deployment Setup ## Branching Strategy This diagram shows the branching strategy which Dolphin Flashcards uses Branching Strategy