Why We Need Integrity Tests
Explore the need for integrity tests in maintaining reliable databases. Understand how to implement constraints using SQLAlchemy, handle complex data requirements, and apply preventative and diagnostic checks both inside and outside the database. Learn to write tests that ensure data validity and consistency to keep your application’s data clean and trustworthy.
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Handling constraints within the database has the advantage of obtaining universal compliance. With Postgres, it becomes impossible for data from any source to violate the constraints we’ve put in place. On the other hand, some constraints do not readily lend themselves to being handled by the database. Here, we discuss some types of difficult constraints to look out for. We then consider both preventative and diagnostic out-of-database approaches to data integrity.
Complex constraints
Some conditions, even on individual fields, can get complicated. A field storing an email ...