Career
Building a Data Dictionary
Senior Data Analyst
April 6, 2026
5 min read
The information_schema
Every database has a built-in set of views that describe its own structure.
SELECT table_name, column_name, data_type
FROM information_schema.columns
WHERE table_schema = 'public';
Why It Matters
A well-documented database is easier to maintain, onboard new team members, and audit.
*Day 97: Debugging Slow Queries in Production.*