Database Administration Online Test
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The Database Administration online test assesses knowledge of database management systems and SQL skills through a series of live coding tasks that require writing SQL queries.
The assessment includes work-sample tasks such as:
- Monitoring database performance, troubleshooting issues, recovering data from a backup, and other database administration tasks.
- Writing queries and subqueries that join, group, filter, and aggregate data.
- Creating new database tables with proper table schema and constraints.
A good database admin, back-end developer, or SQL developer all need a solid understanding of Database Administration procedures to effectively store and organize data, as well as use SQL to interface with and access a database efficiently.
Sample public questions
App usage data are kept in the following table:
TABLE sessions id INTEGER PRIMARY KEY, userId INTEGER NOT NULL, duration DECIMAL NOT NULL
Write a query that selects userId and average session duration for each user who has more than one session.
See the example case for more details.
Under a new database backup plan:
- Full backups of the database are taken every 6 hours starting at 00:00.
- Differential backups are taken every 1 hour starting at 01:00, except for intervals of 6 hours (when full backups are taken).
- Transaction/redo log backups are taken every 30 minutes starting at 00:00. The transactional/redo log is reset/cleared after a backup is taken.
Due to a missed scenario during the testing phase, a development error in setting wrong query conditions resulted in the loss of all records from a table at 13:45, which had data prior to the implementation of the backup plan. All further backups were taken as per the mentioned schedule.
Select all the ways to restore the database until 13:45.
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51 more premium Database Administration questions
Index Performance, Movies, Users and Accounts, Matching Clothes, River Discharge, Database Storage Space, Index Fragmentation, Master Slave, Manager Sales, Agents, New Wages, Research Funding, Guest List, Student Management, Product Data, Projects, Authors, Autocomplete, Bank Branches, Cheapest Product, Countries, Developers, Hospital Patients, Menu Items, Rectangles, Restaurant Menu, Poll, Sales, Employee Manager, Auto Show, Welfare Organization, Tasks, Student Rankings, Student Activities, Youngest Child, Movies Live, Average Salary, Movie Genres, ATM Locations, Transactions, Merge Stock Index, Ban Users, Delete Orders, Department Report, SMS Messages, Ingredients, Roads, Karting Leaderboard, Player Division, Popular Category, Retirees.
Skills and topics tested
- SQL
- Indexes
- Performance Tuning
- Aggregation
- Select
- Subqueries
- Alter Table
- Constraints
- Database Schema
- Conditions
- Joins
- Database Normalization
- Database Administration
- Database Logs
- Server Clustering
- CTE
- Recursion
- Left Join
- Right Join
- Update
- SQL CASE
- Create Index
- Create Table
- Ordering
- Bug Fixing
- Group by
- Union
- Delete
- Insert
- Views
For job roles
- Database Administrator
- SQL Developer
Sample candidate report
What others say
Simple, straight-forward technical testing
TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.
Jan Opperman, Grindrod Bank
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