Oracle PL/SQL Developer Certified Professional

Measured data

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Oracle PL/SQL Developer Certified Professional

1Z0-149

We scored 65 real Oracle PL/SQL Developer Certified Professional exam questions 1-10 on question complexity and broke the result down by exam domain.

65 questions scored
7 domains
1.9/10 overall complexity

Complexity by exam domain

Higher scores mean more demanding question formats. The exam score is computed over the whole bank, not averaged across domains.

Exam complexity score1.9/10Gentle · measured across 65 bank questions
  • Code Management6 questions · complexity 2.7/10 · Gentle

    50% multi-select · 0% scenario · 33% interactive

  • Dynamic SQL and Advanced Topics10 questions · complexity 1.8/10 · Gentle

    30% multi-select · 0% scenario · 30% interactive

  • Exception Handling6 questions · complexity 2.0/10 · Gentle

    33% multi-select · 0% scenario · 33% interactive

  • PL/SQL Fundamentals10 questions · complexity 1.8/10 · Gentle

    30% multi-select · 0% scenario · 30% interactive

  • SQL in PL/SQL7 questions · complexity 1.7/10 · Gentle

    29% multi-select · 0% scenario · 29% interactive

  • Subprograms and Packages16 questions · complexity 1.9/10 · Gentle

    31% multi-select · 0% scenario · 31% interactive

  • Working with Data10 questions · complexity 1.8/10 · Gentle

    30% multi-select · 0% scenario · 30% interactive

Full per-domain breakdown

Blueprint weight, bank size and question format mix for every domain of the exam.

DomainBlueprintQuestionsSingleMultiInteractiveComplexity
Code Management10%62222.7/10Gentle
Dynamic SQL and Advanced Topics15%104331.8/10Gentle
Exception Handling10%62222.0/10Gentle
PL/SQL Fundamentals15%104331.8/10Gentle
SQL in PL/SQL10%73221.7/10Gentle
Subprograms and Packages25%166551.9/10Gentle
Working with Data15%104331.8/10Gentle

How the score is calculated

The formula is fixed and public, so anyone can reproduce these numbers from the same bank.

Every question in the Oracle PL/SQL Developer Certified Professional bank is measured on four signals that can be read directly from the database. Each signal is expressed as a share of the questions in the domain, and the four shares are combined with fixed weights:

  • Multi-select questions (40% weight). Items with more than one correct answer. The candidate has to find all of them, which is the single hardest format in the bank.
  • Scenario questions (30% weight). Questions longer than 150 characters, which describe a situation instead of a definition and therefore test reasoning rather than recall.
  • Interactive questions (20% weight). Items that require reading code or a configuration snippet.
  • Deep explanations (10% weight). Questions whose explanation runs past 300 characters, which signals a concept with real nuance behind it.

The combined share is multiplied by ten to produce a 1-10 score. The exam-level score is computed over the whole bank rather than averaged across domains, so a small domain cannot distort the total. Figures on this page are recomputed from the live bank on every crawl.

Data set: Certilum Oracle PL/SQL Developer Certified Professional Foundation question bank, 65 questions, 7 domains. Published by CERTILUM. This is Certilum’s own measurement of its own question bank and is not an official Oracle statistic.

Questions analysed
65
Exam domains
7
Hardest domain
Code Management (2.7)
Most approachable domain
SQL in PL/SQL (1.7)
Question mix
25 single · 20 multi · 20 interactive
Measured on
Foundation

Frequently asked questions

What our Oracle PL/SQL Developer Certified Professional complexity numbers mean and how they are produced.