Search test library by skills or roles
⌘ K

About the test:

The IBM DB2 Online Test uses scenario-based multiple choice questions to evaluate candidates on their technical knowledge and practical skills related to IBM DB2 including topics such as database design, database administration, database security, database performance, and database backup and recovery. The test aims to determine candidates' ability to design, develop, and manage efficient and effective IBM DB2 databases that meet business requirements, as well as their familiarity with IBM DB2 best practices, design patterns, and techniques.

Covered skills:

  • SQL Basics
  • Data Manipulation
  • Indexes and Constraints
  • Stored Procedures
  • Concurrency and Locking
  • Backup and Recovery
  • Database Design
  • Table Creation
  • Joins and Subqueries
  • Triggers
  • Performance Tuning

Try practice test
9 reasons why
9 reasons why

Adaface IBM DB2 Database Test is the most accurate way to shortlist DB2 Administrators



Reason #1

Tests for on-the-job skills

The IBM DB2 Database Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Understanding the fundamentals of IBM DB2 Database
  • Writing SQL queries for data retrieval and manipulation
  • Designing efficient and normalized databases
  • Creating tables with appropriate data types and constraints
  • Working with indexes and constraints to optimize performance
  • Performing joins and subqueries to retrieve data from multiple tables
  • Implementing stored procedures for complex database operations
  • Implementing triggers to enforce data integrity
  • Understanding concurrency and locking mechanisms in DB2
  • Identifying and resolving performance issues in DB2
  • Implementing backup and recovery strategies in DB2
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
Try practice test
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this IBM DB2 Database Test will be non-googleable.

🧐 Question

Medium

Database Performance Tuning and Data Consistency
Database Performance Tuning
Transaction Management
Locking Mechanisms
Try practice test
Consider the following DB2 database scenario. You are managing a stock trading platform that uses a DB2 database to track user transactions and market prices. The database has two tables, Users and Stocks.
 image
A user transaction to buy a stock is a two-step process:

1. Decrease the user's balance in the Users table.
2. Increase the quantity of the stock owned by the user in the Stocks table.

Both these steps need to be performed atomically to maintain data consistency.

Recently, with the increase in the volume of transactions, you are experiencing performance issues. Additionally, you have observed that during peak trading hours, a large number of user transactions are getting blocked, leading to user dissatisfaction.

Which of the following strategies would BEST address the performance and blocking issues, while ensuring data consistency?
A: Implement an optimistic concurrency control mechanism.
B: Reduce the transaction isolation level to READ UNCOMMITTED.
C: Break the transaction into two separate transactions
D: Increase the database's buffer pool size.
E: Implement row-level locking.

Medium

DB2 Isolation Levels and Data Consistency Revisited
Transactions
Isolation Levels
Data Consistency
Try practice test
Consider two users executing the following transactions concurrently on DB2:

Transaction 1 (User A):
 image
Transaction 2 (User B):
 image
Table1 has thousands of records, and the value 'Value1' for Column1 is not unique in Table1. Both transactions are executed almost simultaneously with Transaction 2 executed a bit earlier. Considering the isolation levels set for the transactions, which of the following is the potential data inconsistency issue that might arise?
A: A deadlock situation may occur.
B: Transaction 1 will wait indefinitely for Transaction 2 to commit.
C: Both transactions might update the same record leading to a lost update.
D: Transaction 1 can experience a dirty read due to the changes made by Transaction 2.

Medium

Optimizing Query Performance
Indexing
Query Optimization
Try practice test
You are managing a DB2 database which includes a table named `ORDERS`. The `ORDERS` table has a large volume of data and contains the following columns: `OrderID`, `CustomerID`, `OrderDate`, `ProductID`, `Quantity`. 

One of the frequently executed queries on the `ORDERS` table is:
 image
You are asked to optimize this query without changing its structure or the table schema. Which of the following strategies would MOST likely improve the performance of this query?
A: Create a HASH index on `CustomerID` and `OrderDate`.
B: Create a CLUSTERED index on `CustomerID` and `OrderDate`.
C: Create a NONCLUSTERED index on `CustomerID` and `OrderDate`.
D: Create a CLUSTERED index on `OrderID`.
E: Create a NONCLUSTERED index on `OrderID`.

Medium

Transaction Handling and Error Recovery in DB2
SQL Programming
Transactions
Error Handling
Try practice test
Consider the following pseudocode in an IBM DB2 environment:
 image
This stored procedure is used to update the inventory of a particular item. If the `NewQuantity` input parameter is negative, the procedure signals an exception. There's also a handler declared for exceptions, which logs an error message.

Given this scenario, if an error occurs during the UPDATE statement, which of the following will happen?
A: The update operation will fail, an error message will be logged, and the quantity in the inventory will remain unchanged.
B: The update operation will succeed, no error message will be logged, and the quantity in the inventory will be updated.
C: The update operation will fail, an error message will be logged, but the quantity in the inventory will still be updated.
D: The update operation will fail, no error message will be logged, and the quantity in the inventory will remain unchanged.
E: The update operation will succeed, an error message will be logged, but the quantity in the inventory will still be updated.
🧐 Question🔧 Skill

Medium

Database Performance Tuning and Data Consistency
Database Performance Tuning
Transaction Management
Locking Mechanisms

3 mins

IBM DB2
Try practice test

Medium

DB2 Isolation Levels and Data Consistency Revisited
Transactions
Isolation Levels
Data Consistency

2 mins

IBM DB2
Try practice test

Medium

Optimizing Query Performance
Indexing
Query Optimization

2 mins

IBM DB2
Try practice test

Medium

Transaction Handling and Error Recovery in DB2
SQL Programming
Transactions
Error Handling

3 mins

IBM DB2
Try practice test
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Database Performance Tuning and Data Consistency
Database Performance Tuning
Transaction Management
Locking Mechanisms
IBM DB2
Medium3 mins
Try practice test
DB2 Isolation Levels and Data Consistency Revisited
Transactions
Isolation Levels
Data Consistency
IBM DB2
Medium2 mins
Try practice test
Optimizing Query Performance
Indexing
Query Optimization
IBM DB2
Medium2 mins
Try practice test
Transaction Handling and Error Recovery in DB2
SQL Programming
Transactions
Error Handling
IBM DB2
Medium3 mins
Try practice test
Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Try practice test
Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment IBM DB2 Database Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the IBM DB2 Database Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

Try practice test
Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring


Learn more

About the IBM DB2 Database Assessment Test

Why you should use Pre-employment IBM DB2 Database Online Test?

The IBM DB2 Database Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Knowledge of IBM DB2 Database and its features
  • Understanding of SQL Basics and its syntax
  • Ability to design databases and create appropriate table structures
  • Proficiency in data manipulation using SQL queries
  • Experience in creating tables and defining indexes and constraints
  • Understanding of joins and subqueries for data retrieval
  • Knowledge of stored procedures and their implementation
  • Familiarity with triggers and their usage in database operations
  • Understanding of concurrency and locking mechanisms in DB2
  • Ability to perform performance tuning for optimal database operation

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the IBM DB2 Database Online Test?

  • SQL Basics

    This skill covers the knowledge and understanding of SQL syntax, commands, and functions used in querying and manipulating data in DB2. It is crucial to measure this skill to evaluate the candidate's proficiency in writing and optimizing SQL queries.

  • Database Design

    This skill encompasses the ability to design an efficient and well-structured database schema in DB2, including defining tables, relationships, and data types. Measuring this skill helps assess the candidate's expertise in creating a database schema that meets the requirements and ensures data integrity and performance.

  • Data Manipulation

    This skill focuses on the candidate's knowledge and experience in performing data manipulation operations in DB2, such as inserting, updating, and deleting records. Evaluating this skill is crucial as it reflects the candidate's ability to effectively handle and manipulate data within a DB2 database.

  • Table Creation

    This skill pertains to the candidate's proficiency in creating and managing database tables in DB2, including defining columns, constraints, and indexes. Measuring this skill is important to ensure that the candidate can accurately create tables that align with the data model and optimize query performance.

  • Indexes and Constraints

    This skill covers the understanding and utilization of indexes and constraints in DB2. It is essential to measure this skill to assess the candidate's knowledge of maintaining data integrity, improving query performance, and managing database constraints.

  • Joins and Subqueries

    This skill refers to the ability to utilize joins and subqueries effectively in DB2 to retrieve and manipulate data from multiple tables. Measuring this skill helps evaluate the candidate's proficiency in writing complex queries and extracting meaningful insights from interconnected data.

  • Stored Procedures

    This skill involves the knowledge and experience of creating and using stored procedures in DB2. It is important to measure this skill as stored procedures can enhance performance, maintain consistency, and encapsulate complex business logic within the database.

  • Triggers

    This skill encompasses the understanding and implementation of triggers in DB2, which enable automatic execution of predefined actions in response to specific events or changes in the database. Measuring this skill is essential to assess the candidate's ability to implement data validation, enforce business rules, and maintain data integrity using triggers.

  • Concurrency and Locking

    This skill focuses on the candidate's familiarity with the concepts of concurrency control and locking mechanisms in DB2. Evaluating this skill helps gauge the candidate's knowledge of managing concurrent transactions, avoiding data inconsistency, and ensuring data integrity in multi-user environments.

  • Performance Tuning

    This skill involves the ability to optimize the performance of DB2 databases by tuning various aspects, including query optimization, index usage, and database configuration. Measuring this skill is crucial to assess the candidate's expertise in identifying and resolving performance bottlenecks to improve overall system efficiency.

  • Backup and Recovery

    This skill covers the knowledge and experience of implementing backup and recovery strategies for DB2 databases to ensure data protection and minimize data loss. Evaluating this skill helps determine the candidate's ability to design and execute backup plans, implement recovery procedures, and mitigate the impact of potential data disasters.

  • Full list of covered topics

    The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for IBM DB2 Database Test to be based on.

    SQL Basics
    Database Design
    Data Manipulation
    Table Creation
    Indexes and Constraints
    Joins and Subqueries
    Stored Procedures
    Triggers
    Concurrency and Locking
    Performance Tuning
    Backup and Recovery
    Relational Database Management Systems
    Entities and Relationships
    Normalization
    Primary Keys
    Foreign Keys
    Data Types
    NULL Values
    SELECT Statement
    INSERT Statement
    UPDATE Statement
    DELETE Statement
    Aggregate Functions
    Group By
    Having Clause
    Order By
    Data Definition Language (DDL)
    CREATE TABLE
    ALTER TABLE
    DROP TABLE
    CREATE INDEX
    ALTER INDEX
    DROP INDEX
    Constraints
    Types of Joins
    INNER JOIN
    LEFT JOIN
    RIGHT JOIN
    FULL JOIN
    Self-Join
    Subqueries
    Correlated Subqueries
    Nested Subqueries
    Creating and Executing Stored Procedures
    Input/output Parameters
    Error Handling
    Dropping Stored Procedures
    Creating and Using Triggers
    Trigger Types
    FOR EACH ROW Trigger
    BEFORE Trigger
    AFTER Trigger
    Triggering Events
    Locking Mechanisms
    Concurrency Issues
    Deadlocks
    Performance Monitoring
    Query Optimization
    Indexing
    Table Partitioning
    Backup Strategies
    Recovery Techniques
    Point-in-Time Recovery
    Full Backup
    Differential Backup
    Incremental Backup
    Archiving
Try practice test

What roles can I use the IBM DB2 Database Online Test for?

  • DB2 Administrator
  • DB2 Developer
  • DB2 Database Architect
  • IBM Data Engineer
  • DB2 Consultant

How is the IBM DB2 Database Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Knowledge of backup and recovery procedures for data protection
  • Experience in integrating DB2 with other technologies
  • Proficiency in writing complex SQL queries for data analysis
  • Understanding of database normalization and denormalization techniques
  • Knowledge of DB2 utilities for data management and administration
  • Ability to troubleshoot and resolve database-related issues
  • Experience in database migration and version upgrades
  • Proficiency in database modeling and schema design
  • Understanding of database security and access control
  • Knowledge of DB2 monitoring and performance optimization
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

IBM DB2 Database Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

customers across world
Join 1200+ companies in 75+ countries.
Try the most candidate friendly skills assessment tool today.
g2 badges
Ready to use the Adaface IBM DB2 Database Test?
Ready to use the Adaface IBM DB2 Database Test?
logo
40 min tests.
No trick questions.
Accurate shortlisting.
Terms Privacy Trust Guide

🌎 Pick your language

English Norsk Dansk Deutsche Nederlands Svenska Français Español Chinese (简体中文) Italiano Japanese (日本語) Polskie Português Russian (русский)
ada
Ada
● Online
✖️