These days, more and more people are exploring careers around data warehousing. Tools within this sector, like Informatica, are becoming more critical than ever. If you find yourself preparing for a data warehousing position, you’ll likely be asked several Informatica interview questions.
During your interview, you may be asked simple questions or they could ask you how you’d react in particular situations. To get prepared, you should plan to study both types and come to the table with concrete knowledge of the Informatica tool.
Let’s take a look at some of the top questions around Informatica.
Define Lookup Transformation.
One of the most common questions asked in Informatica-based interviews is around defining certain aspects of the tool, including Lookup Transformation.
It’s best to know what type of ports can be created, what it means, and when and how to use it. Lookup Transformation is an important term to understand when you prepare for the interview.
What are the different Lookup Caches?
Going into this type of interview, know that lookups can be both cached and un-cached as well as static or dynamic. When it comes to naming the different types of caches, these are the names you should come prepared to list:
- Static cache
- Dynamic cache
- Persistent cache
- Shared cache
- Recache
What is the difference between powerhouse and repository servers?
The right answer to this question will clearly define the differences. For instance, a Powerhouse server is the main governing server, and it helps throughout the integration process. A respiratory server is about consistency within the server itself.
Name the different types of transformations.
Anyone who has studied Informatica knows there are many different types of transformations. Walking into an interview armed with their names and their purpose can showcase your wealth of knowledge. For example, here are just a few that you can take with you into an interview:
- Filter transformation
- Normalizer transformation
- Rank transformation
- Sequence generator transformation
- Sorter transformation
- XML source qualifier transformation
For a list of more, consult your study guides or try these popular articles.
Describe the difference between active and passive transformations.
As you can see, questions around transformations come up often during interviews that concern Informatica. It’s key to come prepared with as much knowledge as possible, including an understanding of active and passive transformations.
For instance, consider what other questions you can ask like, “What do they do?” or “Can you describe the actions they can take?” Each comes with its own set of actions you’ll need to explain.
What is a workflow?
Knowing how to define a workflow is one of the most straightforward questions in the batch, especially for someone skilled in Informatica. A workflow contains the instructions that servers use to define or complete a task.
Remember that sometimes it’s the simplest questions we forget to study heading into an interview. So keep this one, and those like it, at the ready.
Preparing for Informatica interview questions isn’t as simple as most other interviews. You need to shine a spotlight on your skills with the tool, your practical knowledge, as well as your experience in the field.
While it might be easy to trust your knowledge, it’s best to get prepared.
