iLink Multitech Solutions Power BI Developer Interview Questions and Answers for Experienced

Import model is a Power BI feature that allows you to import data from various sources and create a data model.

• Import model is used to create a data model in Power BI.

• It allows you to import data from various sources such as Excel, CSV, SQL Server, etc.

• You can create relationships between tables, add calculated columns, and measures.

• Import model is useful when you have large amounts of data that need to be transformed ...read more

Row level security is a feature in Power BI that restricts data access at the row level based on user roles or criteria.

• Row level security limits data access based on user roles or criteria

• It ensures that users only see the data they are authorized to access

• Row level security can be implemented using DAX expressions in Power BI

Data gateway is a tool that connects on-premises data sources with cloud-based applications.

• Data gateway allows for secure transfer of data between on-premises and cloud environments

• It acts as a bridge between on-premises data sources and cloud services like Power BI

• Data gateway helps in maintaining data security and compliance

• Examples of data gateways include Power BI Gateway and Azure Data Gateway

Filters are used to restrict data at the report level, while slicers are interactive visual filters applied to specific visuals.

• Filters are applied at the report level and affect all visuals, while slicers are applied to specific visuals only.

• Slicers allow users to interactively filter data by selecting values from a list or range.

• Filters can be applied to multiple visuals at once, while slicers are applied individuall...read more

Measure is a calculated value based on data in a model, while count is a simple count of records.

• Measure is a calculated value based on aggregation functions like sum, average, etc.

• Count is a simple count of records in a dataset.

• Measures are used in Power BI to perform calculations on data, while count is used to simply count the number of records.

Row level security is a feature in Power BI that restricts data access at the row level based on user roles or criteria.

• Allows users to only see data that is relevant to them

• Can be implemented using DAX expressions

• Helps in maintaining data privacy and security

• Useful for organizations with sensitive data

Relationships in Power BI define how different tables are connected to each other.

• Relationships define how tables are related to each other based on common fields

• They are used to create connections between tables for data analysis

• Relationships can be one-to-one, one-to-many, or many-to-many

• They are essential for creating accurate and meaningful visualizations in Power BI

We used a variety of data sources including SQL databases, Excel files, and web APIs.

• SQL databases

• Excel files

• Web APIs