Data Validation
Everything on SkillVeris tagged Data Validation — collected across the glossary, study notes, blog, and cheat sheets.
4 resources across 1 library
Interview Questions(4)
What Is a CHECK Constraint and When Would You Use One?
A CHECK constraint is a rule attached to a column or table that the database evaluates on every insert or update, rejecting any row whose values do not satisfy…
How Do You Implement Data Quality Validation in Pipelines?
Data quality validation in pipelines means running automated checks — for null rates, uniqueness, referential integrity, value ranges, and row-count anomalies…
What is a Mutator Method in OOP?
A mutator method, commonly called a setter, is a public method that changes the internal state of an object in a controlled way, typically validating input bef…
Getters and Setters: Best Practices
Good getter/setter practice means not generating them blindly for every field, but instead validating input in setters, returning defensive copies of mutable f…