if u're new to working with financial data and someone drops off an old layout spec for those pesky mainframes, this is where i started. it's like navigating through thick fog - every step matters.
mainframe systems use these
fixed-length fields that can drive anyone crazy trying to parse them into something useful in a modern lakehouse setup (like delta). the trick lies not just understanding what each column represents but also how they fit together, which is where those old COBOL copybooks come handy. if u've been scratching ur head over why some records are missing or data types mismatch - this could be for ya.
have u faced any specific challenges with this process? share ur tips!
full read:
https://dzone.com/articles/mainframe-fixed-width-to-delta-lake