Database Analyst/ Programmer Interview Questions and Answers in 2025 (100+ Q&A)

Database Analyst/ Programmer DB Administration

Ques:- What are the different modes of mounting a Database with the Parallel Server ?

Asked In :- Mindgate Solutions, LibSys, Department for Transport,

Right Answer:
The different modes of mounting a database with the Parallel Server are:

1. **Exclusive Mode**: Only one instance can access the database at a time.
2. **Shared Mode**: Multiple instances can access the database simultaneously, allowing for parallel processing.
3. **Read-Only Mode**: Instances can access the database for read operations only, preventing any write operations.

Database Analyst/ Programmer DB Architecture

Ques:- How we can secure our data in local area Network

Asked In :- ipNX Nigeria, intellect design arena ltd,

Right Answer:
To secure data in a local area network (LAN), you can implement the following measures:

1. Use strong passwords for all devices and accounts.
2. Enable network encryption (e.g., WPA3 for Wi-Fi).
3. Implement a firewall to monitor and control incoming and outgoing traffic.
4. Use Virtual Private Networks (VPNs) for secure remote access.
5. Regularly update software and firmware to patch vulnerabilities.
6. Limit access to sensitive data through user permissions and roles.
7. Use antivirus and anti-malware software to protect against threats.
8. Regularly back up data to prevent loss from attacks.
9. Monitor network traffic for unusual activity.
10. Educate users about security best practices and phishing threats.

Database Analyst/ Programmer DB Architecture

Ques:- How we use NLS function in Datastage? what are advantages of NLS function? where we can use that one? explain briefly?

Asked In :- Tyto Software, Solverines Technology Solutions, UKG (Ultimate Kronos Group), springml, inc.,

Right Answer:
In DataStage, the NLS (National Language Support) function is used to handle multilingual data and ensure proper character encoding. It allows you to convert data between different character sets and formats, making it easier to work with international data.

Advantages of the NLS function include:
1. **Character Set Conversion**: It enables conversion between various character sets, ensuring data integrity across different languages.
2. **Locale-Specific Formatting**: It allows formatting of data according to specific regional settings, such as date and number formats.
3. **Improved Data Quality**: By correctly handling different languages and characters, it helps maintain data quality and accuracy.

You can use the NLS function in scenarios where you need to process or transform data that includes multiple languages or requires specific formatting based on locale.

Database Analyst/ Programmer DB Architecture

Ques:- How can I extract data from DB2 (on IBM iSeries) to the data warehouse via Datastage as the ETL tool. I mean do I first need to use ODBC to create connectivity and use an adapter for the extraction and transformation of data? Thanks so much if anybody cou

Asked In :- OCR Services, smartanalyst,

Right Answer:
Yes, you need to use ODBC to create connectivity to the DB2 database on IBM iSeries. After establishing the connection, you can use DataStage to extract and transform the data using the appropriate adapters for DB2.

Database Analyst/ Programmer DB Architecture

Ques:- What happends out put of hash file is connected to transformer ..What error it throughs

Asked In :- thingworx, a ptc business, root info solutions,

Right Answer:
If the output of a hash file is connected to a transformer, it will throw an error indicating that the hash file is not a valid source for the transformer, as transformers require a relational source or a sequential file.

Aptitude Database Analyst/ Programmer

Ques:- A is driving on a highway when the police fines him for over speeding and exceeding the limit by 10 km/hr. At the same time B is fined for over speeding by twice the amount by which A exceeded the limit. If he was driving at 35 km/hr what is the speed limit for the road?

Asked In :- Pinnacle Infotech Solutions Pvt Ltd, onestream software,

Right Answer:
The speed limit for the road is 25 km/hr.

Comments

Eyang, Daniel Eyoh Aug 24, 2022

15km/hr

Database Analyst/ Programmer DB Architecture

Ques:- How to sort the data in Datagrid ? when we use DataBound event of Datagrid, I want to display te data using controls….For an example, If i click a button, which is outside of the datagrid, entire data should be shown. 1st column in TextBoxs. second colu

Asked In :- andela, infocepts,

Right Answer:
To sort data in a DataGrid and display it in TextBoxes when a button is clicked, you can follow these steps:

1. Handle the button click event.
2. Retrieve the data from the DataGrid's data source.
3. Sort the data programmatically (e.g., using LINQ or sorting methods).
4. Populate the TextBoxes with the sorted data.

Here's a simple example in C#:

```csharp
private void Button_Click(object sender, EventArgs e)
{
// Assuming 'dataSource' is your data source for the DataGrid
var sortedData = dataSource.OrderBy(item => item.FirstColumn).ToList();

// Display sorted data in TextBoxes
textBox1.Text = sortedData[0].FirstColumn.ToString();
textBox2.Text = sortedData[0].SecondColumn.ToString();
// Repeat for other TextBoxes as needed
}
```

Make sure to replace `FirstColumn` and `SecondColumn`

Database Analyst/ Programmer Oracle

Ques:- About my OCA and OCP Certifications

Asked In :-

Right Answer:
The OCA (Oracle Certified Associate) certification demonstrates foundational knowledge of Oracle databases, while the OCP (Oracle Certified Professional) certification indicates advanced skills and expertise in Oracle database administration and development.

Aptitude Database Analyst/ Programmer

Ques:- . The place in India receiving the lowest rainfall is(1) Jaisalmer(2) Leh(3) Bikaner(4) Jodhpur

Asked In :-

Right Answer:
Jaisalmer

Aptitude Database Analyst/ Programmer

Ques:- . Who was the Chairman of drafting Committee to prepare adraft Constitution for India?(1) Dr. S. Radha Krishnan(2) Dr. B.R. Ambedkar(3) K.M. Munshi(4) B.N. Roy

Asked In :- pipedrive,

Right Answer:
Dr. B.R. Ambedkar

Aptitude Database Analyst/ Programmer

Ques:- Where was the first Municipal Corporation in India set up? (a) Bombay (b) Calcutta (c) Delhi (d) Madras

Asked In :- DigiCert, protonmail,

Right Answer:
(a) Bombay

Comments

Deekshitha R Nov 9, 2021

madras

Aptitude Database Analyst/ Programmer

Ques:- Rayon is also known as?(a) Artificial Silk (b) Superfine Silk (c) Superfine Cotton(d) Blended Cotton

Asked In :- knowit,

Right Answer:
(a) Artificial Silk

Comments

Sudeshna Roy Aug 24, 2022

Artificial silk

Tammy May 17, 2022

Database Analyst/ Programmer Oracle

Ques:- The Users are not able to save the data, as a BASIS ADMIN meto not able to save, what is the problem would be..?

Asked In :- Harrier Information Systems,

Right Answer:
The problem could be due to insufficient user permissions, database connectivity issues, or a locked database object.

Aptitude Database Analyst/ Programmer

Ques:- Which colour has the maximum scattering power? (A) Indigo (B) Red (C) Green (D) Violet

Asked In :- Trigent Software,

Right Answer:
(D) Violet

Comments

Adepoju Toluwani Aug 14, 2022

Violet

Susuma Sep 5, 2021

Nothing

Prajna alva Nov 19, 2020

Red

Business Intelligence Database Analyst/ Programmer

Ques:- What are all the ways to define macro variable??

Asked In :- DataCore, kotak mahindra bank, ivy mobility, intellicus technologies, stefanini philippines, upstart lab,

Right Answer:
Macro variables can be defined in the following ways:

1. **%LET Statement**: Using the %LET statement to assign a value to a macro variable.
2. **Macro Definition**: Defining a macro using the %MACRO and %MEND statements, which can include parameters.
3. **CALL SYMPUT**: Using the CALL SYMPUT function in a DATA step to create a macro variable from a dataset value.
4. **%SYSCALL**: Using the %SYSCALL statement to create macro variables from data step variables.
5. **%GLOBAL and %LOCAL Statements**: Declaring macro variables as global or local within a macro.

Database Analyst/ Programmer Oracle

Ques:- What is BDC?

Asked In :- tradebyte software gmbh,

Right Answer:
BDC stands for Batch Data Communication, a method in SAP for transferring data in bulk from external sources into the SAP system.

Database Analyst/ Programmer Oracle

Ques:- ORA-06535: statement string in string is NULL or 0 length

Asked In :- hibob,

Right Answer:
The ORA-06535 error occurs when a PL/SQL statement or block is null or has a length of zero. To resolve this, ensure that the SQL statement being executed is properly defined and not empty.

Database Analyst/ Programmer Oracle

Ques:- ORA-23421: job number string is not a job in the job queue

Asked In :- Allegion,

Right Answer:
The error ORA-23421 indicates that the specified job number does not exist in the job queue. This can occur if the job has already been completed, has been dropped, or if the job number is incorrect. To resolve this, verify the job number and check the job queue for existing jobs.

Database Analyst/ Programmer Oracle

Ques:- What is the purpose of standard cost update?

Asked In :- evoke technologies,

Right Answer:
The purpose of standard cost update is to adjust the standard costs of products to reflect changes in production costs, ensuring accurate financial reporting and inventory valuation.

Aptitude Database Analyst/ Programmer

Ques:- . India has been described by the constitution as(1) Federation(2) Quasi-federal(3) A uni of states(4) None of these

Asked In :- Celigo,

Right Answer:
(2) Quasi-federal

The Database Analyst / Programmer section on takluu.com is crafted for professionals who specialize in analyzing data requirements, designing database solutions, and developing efficient queries and scripts for business needs. This role plays a vital part in ensuring that databases run smoothly, data is accessible, and insights are extracted accurately to support decision-making.

This category covers essential topics such as data modeling, SQL programming, query optimization, stored procedures, triggers, and database reporting tools. It also includes an understanding of relational database management systems like MySQL, Oracle, and SQL Server, along with scripting languages commonly used to automate database tasks.

Our content focuses on both the analytical and programming skills required to interpret data effectively and write optimized code that improves database performance. Interview questions cover real-world scenarios including data extraction, troubleshooting, performance tuning, and report generation.

In addition, the section introduces you to data integrity, normalization principles, indexing strategies, and the use of BI tools to convert raw data into actionable insights. This comprehensive approach ensures that you are well-prepared for roles such as Database Analyst, SQL Developer, or Data Programmer.

At Takluu, we provide not only theoretical knowledge but also practical coding exercises, mock interview questions, and detailed explanations to help you ace your database analyst/programmer interviews with confidence.

If you want to excel in managing and programming databases, this section is your complete guide to success.

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