PCPP2 Database Access Practice Question
Which THREE features are provided by SQLAlchemy's Unit of Work pattern?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Identity mapping to ensure object uniqueness
The Unit of Work pattern manages changes to objects and ensures they are flushed to the DB in the correct order.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Direct translation of HTTP requests to SQL
Why it's wrong here
This is outside the scope of the ORM.
- ✓
Identity mapping to ensure object uniqueness
Why this is correct
Identity maps keep object uniqueness per session.
- ✓
Tracking object changes (dirty checking)
Why this is correct
This is core to the Unit of Work.
- ✓
Flushing changes to the DB in optimal order
Why this is correct
This prevents foreign key violations.
- ✗
Automatic creation of tables
Why it's wrong here
Table creation is metadata-driven, not session-driven.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP2 practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCPP2 exam.