In Flask, database migrations are typically handled using Flask-Migrate, which is built on top of Alembic. You initialize the migrations, create migration scripts as your models change, and then apply…
Tag
#sqlalchemy
How do you handle database migrations in a Flask application?
🏷️
How would you implement database transactions in a Flask application using SQLAlchemy, and what strategies would you employ to handle potential errors during these transactions?
In Flask with SQLAlchemy, I would use a session object to manage transactions, wrapping database operations in a try-except block. If an error occurs, I would roll back the session…
🏷️
How would you design a data model in Python that efficiently handles relationships between entities in a relational database, such as one-to-many and many-to-many relationships?
For designing a data model in Python for relational databases, I would use ORM frameworks like SQLAlchemy or Django ORM. I would define my entities as classes and use relationships…
🏷️
Developer Interview Kit · PDF
2,000 Interview Questions & Answers, in one PDF
- Short answers, in-depth explanations, common mistakes and follow-ups
- 89 topics, from Beginner to Architect, with a clickable contents list
- 226 extra questions that are not on this website
- Free Bonus Pack: 30-day study plan, behavioral questions, salary scripts
$7.99 one-time · instant email delivery
Also available: 260 Developer Learning Paths $4.99
Week-by-week roadmaps for 16 career tracks (Python, React, Java, DevOps, SQL, AI and more), with a progress tracker on every path.
See what's inside →
Get both books for $9.99 (save $2.99):
The material stays free to read online. This is the organised, offline, print-ready PDF edition. Secure payment by PayPal; your personal download link is emailed after payment is confirmed. Digital product, no shipping.