10+ Studio Symbiosis Architects Interview Questions and Answers

Answers to common questions related to Power BI and data analysis.

• Power BI Desktop is a Windows application used to create data visualizations and reports.

• Power BI Service is a cloud-based platform used to share and collaborate on reports and dashboards.

• Reporting is a way to present data in a structured format, while dashboards provide a real-time overview of key metrics.

• Data warehousing involves storing large amounts of data from various sources, while data marts are smaller...read more

Router transformation sends data to multiple targets based on conditions, while filter transformation filters rows based on conditions.

• Router transformation can send data to multiple targets based on conditions

• Filter transformation filters rows based on conditions

• Router transformation can be used to route data to different tables based on certain criteria

• Filter transformation can be used to remove unwanted rows from the data flow

Look up is used to retrieve data from a single source, while joiner is used to combine data from multiple sources.

• Look up is used to search for a value in a data source and return a corresponding value from the same row.

• Joiner is used to combine data from two or more sources based on a common key.

• Look up is used for one-to-one mapping, while joiner is used for many-to-one or one-to-many mapping.

Hive is a data warehouse infrastructure built on top of Hadoop for providing data summarization, query, and analysis.

• Hive is used for managing and querying large datasets stored in Hadoop Distributed File System (HDFS).

• It provides a SQL-like interface called HiveQL for querying data.

• Hive organizes data into tables, partitions, and buckets to optimize queries.

• It supports custom MapReduce scripts for complex data processing tasks.

• Example: CREATE TABLE employees (id INT, name ST...read more

SCD2 logic in Informatica is used to track historical changes in data by creating new records for each change.

• SCD2 stands for Slowly Changing Dimension Type 2

• It involves creating new records for each change in data, while maintaining a link to the previous record

• It typically includes effective start and end dates to track the validity of each record

• SCD2 logic is commonly used in data warehousing to maintain historical data accurately

useState is used in React functional components to manage state and trigger re-renders.

• useState allows functional components to have stateful logic.

• Using variables directly in functional components does not trigger re-renders.

• useState provides a way to update state and trigger component updates.

• useState preserves the state between re-renders.

• Example: const [count, setCount] = useState(0);

A mapplet is a reusable object in Informatica PowerCenter that contains a set of transformations.

• Mapplets can be used in multiple mappings to perform the same set of transformations.

• They can simplify mapping development by encapsulating common logic.

• Mapplets can have input and output ports to connect with other transformations.

The output will be 'result'

• The logical OR operator (||) returns the first truthy value it encounters

• In this case, '0' is falsy, 'false' is falsy, and 'result' is truthy

• Therefore, the output will be 'result'

Building blocks are the fundamental components required to create a system or solution.

• Building blocks can be hardware, software, or a combination of both.

• They are used to create complex systems by combining simple components.

• Examples of building blocks include processors, memory, operating systems, and programming languages.