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15 ETL Informatica Developer Interview Questions (With Example Answers)

It's important to prepare for an interview in order to improve your chances of getting the job. Researching questions beforehand can help you give better answers during the interview. Most interviews will include questions about your personality, qualifications, experience and how well you would fit the job. In this article, we review examples of various etl informatica developer interview questions and sample answers to some of the most common questions.

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Common ETL Informatica Developer Interview Questions

What is your experience with Informatica?

An interviewer might ask "What is your experience with Informatica?" to a/an ETL Informatica Developer in order to gauge the level of experience and expertise that the developer has with the software. This is important because the interviewer wants to ensure that the developer is knowledgeable and experienced enough to be able to effectively use the software to perform ETL tasks.

Example: “I have worked with Informatica for over 5 years now. I have experience with developing, testing and deploying Informatica applications. I am also familiar with the Informatica product suite, including PowerCenter, Data Quality, Data Explorer and Big Data Management.”

What is your experience with ETL?

An interviewer would ask this question to determine if the candidate has the necessary skills and experience to perform the job duties of an ETL Informatica Developer. This is important because the role of an ETL Informatica Developer includes designing, developing, and testing ETL solutions using the Informatica PowerCenter platform.

Example: “I have worked extensively with ETL tools like Informatica PowerCenter, DataStage and Talend. I have experience in developing and deploying ETL jobs to load data from various sources into target databases. I am familiar with the various transformations and features of these tools that can be used to manipulate data as per the requirements. I have also worked with scheduling tools like Control-M to schedule and monitor ETL jobs.”

What is your experience with data warehousing?

The interviewer is likely asking this question to gauge the candidate's experience level with data warehousing in general, and specifically with ETL Informatica Developer. This is important because it will give the interviewer a better sense of whether or not the candidate is qualified for the position.

Example: “I have worked extensively with data warehousing and have experience with a variety of tools and technologies. I am well-versed in data architecture, design, and implementation. I have experience with ETL Informatica, and I am confident in my ability to extract, transform, and load data into a warehouse. I am also experienced in creating and maintaining dimensional models. In addition, I have experience with data mining and business intelligence tools, which I can use to generate insights from data warehouses.”

What is your experience with data modeling?

The interviewer is asking about the candidate's experience with data modeling in order to gauge their understanding of how to design databases and data structures. This is important because ETL Informatica Developers need to have a strong understanding of how data is stored in order to effectively extract, transform, and load it.

Example: “I have experience with both logical and physical data modeling. I have used a variety of tools to create data models, including ERwin, PowerDesigner, and Visio. I have also created data models using SQL Server Management Studio. I am familiar with the Entity-Relationship model, the Object-Role model, and the Unified Modeling Language (UML).”

What is your experience with SQL?

An interviewer would ask "What is your experience with SQL?" to an ETL Informatica Developer because SQL is a key component in the Informatica Developer tool. SQL is used to extract data from databases, and it is important for the developer to have experience with it in order to be able to effectively extract and manipulate data.

Example: “I have worked extensively with SQL in my role as an ETL Informatica Developer. I have used it to query databases, manipulate data, and generate reports. I am very comfortable working with SQL and have a strong understanding of its capabilities.”

What is your experience with PL/SQL?

An interviewer would ask "What is your experience with PL/SQL?" to a/an ETL Informatica Developer in order to gauge their level of experience and expertise with the programming language. This is important because it can help to determine how well a candidate would be able to perform ETL tasks and develop Informatica applications.

Example: “I have worked extensively with PL/SQL for over 10 years. I have experience with developing stored procedures, functions, and packages. I am also experienced in performance tuning of PL/SQL code.”

What is your experience with Unix?

The interviewer is likely looking to gauge the candidate's level of comfort and experience with Unix, as it is a common operating system used in conjunction with Informatica. It is important to be able to demonstrate a solid understanding of how to use Unix in order to be successful in this role.

Example: “I have experience working with Unix systems. I am familiar with the basic commands and utilities, and I have also written shell scripts to automate various tasks. I am comfortable working in a Unix environment and am able to troubleshoot issues that may arise.”

What is your experience with shell scripting?

The interviewer is trying to determine if the ETL Informatica Developer has experience working with shell scripts. Shell scripts are important because they can automate many tasks, such as data transformation or data loading. They can also be used to create reports or perform other administrative tasks.

Example: “I have experience with shell scripting in Unix/Linux environments. I am familiar with the Bourne shell, the Korn shell, and the Bash shell. I am able to write scripts to automate tasks such as file manipulation, program execution, and system administration.”

What is your experience with Perl?

There are a few reasons why an interviewer might ask a candidate for a position as an ETL Informatica Developer about their experience with Perl. First, Perl is a common scripting language used in data processing and ETL pipelines. It is important for a developer in this role to have some experience with Perl in order to be able to automate tasks and processes. Second, Perl is often used for data validation tasks. In order to ensure data quality, it is important for the developer to be able to write scripts that can validate data. Finally, Perl can be used to create custom reports and dashboards. A developer who has experience with Perl will be able to create custom reports and dashboards that can provide insights into the data.

Example: “I have been working with Perl for over 5 years now. I have used it extensively for web development, system administration, and data analysis. I am very comfortable with the language and its many modules.”

What is your experience with Java?

An interviewer would ask "What is your experience with Java?" to a/an ETL Informatica Developer in order to gauge their level of experience and expertise with the programming language. Java is a popular programming language that is used in many ETL Informatica Developer jobs, so it is important for the interviewer to know if the candidate has a strong understanding of the language.

Example: “I have worked with Java for over 5 years now. I have experience with developing standalone applications, web applications, and Android applications. I am familiar with the Java language and the various libraries and frameworks available for development. I am also familiar with the process of creating and deploying Java applications.”

What is your experience with XML?

The interviewer is asking about the candidate's experience with XML because it is a common format for data integration. XML is important because it can be used to exchange data between different systems.

Example: “I have worked extensively with XML in my role as an ETL Informatica Developer. I have used XML to parse and transform data from various sources into the required format for loading into the target database. I have also used XML to generate reports from the data in the target database. I am confident in my ability to work with XML to achieve the desired results.”

What is your experience with web services?

There are a few reasons why an interviewer would ask a candidate for their experience with web services. Firstly, web services are a common way to integrate applications and data. Secondly, web services are often used to expose data to third-party applications. Finally, web services can be used to automate tasks or processes. As an ETL Informatica Developer, it is important to have experience with web services so that you can effectively integrate applications and data, as well as expose data to third-party applications.

Example: “I have worked extensively with web services, both as a developer and as an administrator. I have experience with a wide variety of web service technologies, including SOAP, REST, XML-RPC, and JSON-RPC. I have also worked with a number of different web service frameworks, such as Apache CXF, Spring Web Services, and JAX-WS. In addition, I have experience with a number of different web service platforms, including Amazon Web Services (AWS), Microsoft Azure, and Google App Engine.”

What is your experience with SOA?

An interviewer would ask "What is your experience with SOA?" to an ETL Informatica Developer in order to gauge their understanding of the subject matter. SOA, or Service-Oriented Architecture, is a type of software architecture that enables different applications to communicate with each other via web services. It is important for ETL Informatica Developers to have experience with SOA in order to be able to properly extract, transform, and load data from one system to another.

Example: “I have worked extensively with SOA and have experience with both designing and implementing SOA solutions. I have also worked with a number of different SOA platforms and have a good understanding of the various approaches to implementing SOA.”

What is your experience with data integration?

An interviewer might ask "What is your experience with data integration?" to a/an ETL Informatica Developer in order to gauge their level of experience and expertise with the tool. As data integration is a key component of the ETL process, it is important for the developer to have a strong understanding of how to effectively use the tool in order to ensure that data is properly extracted, transformed, and loaded into the target system.

Example: “I have worked extensively with data integration tools like Informatica PowerCenter, DataStage, and Talend. I have experience in extracting data from various sources like databases, flat files, and XML files. I have also transformed and loaded data into different target systems. I am well-versed with the various concepts of data warehousing and ETL.”

What is your experience with business intelligence?

An interviewer would ask "What is your experience with business intelligence?" to a/an ETL Informatica Developer because business intelligence is an important skill for the role. Business intelligence is important for the role because it helps the developer to understand the data and the business, and to make informed decisions about the data.

Example: “I have worked extensively with business intelligence tools and techniques over the past few years. I have used a variety of different tools to help organizations gain insights into their data, including Tableau, QlikView, and Microsoft Power BI. I have also developed ETL processes to load data into these platforms for analysis. In addition, I have experience working with Hadoop and Spark for big data analysis.”

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