Level 1 : Context : 30 000 Foot view Level 2 : Containers : Bird Eyeview Level 3 : Components : Worm Eyeview Level 4 : Code :Worm Eyeview C4 Architecture modeling uses Code UML Artecats to define code for that Simon Brown recomends PlantUML as the best Diagramming tool to use 1. Diagraming as Code with PlantUML PlantUML is Opensource and free PlantUML is a highly versatile tool that facilitates the rapid and straightforward creation of a wide array of diagrams.

1 Open this link : https://gradle.org/install/ 2 open gradle release page : https://gradle.org/releases/ 3 Click on binary Only : https://gradle.org/next-steps/?version=8.10.2&format=bin 4 Now click on verify SHA 256 Checksum (On download popup) 5 Open a command prompt to the downloads folder cd Downloads dir # to display the SHA256 checksum type gradle-8.1.2-bin.zip.sha256 # display the SHA256 checksum of the zip file certutil -hashfile gradle-8.1.2-bin.zip SHA256 the two checksums should be the same Open the file in File Explorer

COBOL (Enterprise COBOL) 1. Code structure |123456 |7 |891011 |1213141516...72 |73747576 ... 80 | | | | | |Sequence | | | | |number Area| | | | | |Indicator| | | | | |A Area | | | | | |B Area | | | | | |Identification Area 1.1 Sequence Number Area Here’s how sequence numbers are used in COBOL: \ Sequence numbers identify lines and assist in version control.