Skyylives Infotech Interview Questions and Answers

ABC Corporation is a multinational technology company specializing in software development and data analytics.

• ABC Corporation is known for its expertise in Power BI development.

• The company has a global presence with offices in multiple countries.

• ABC Corporation offers a wide range of software solutions for various industries.

• They have a strong focus on data analytics and provide advanced reporting and visualization too...read more

The current CTC and expected CTC are personal financial details and should not be disclosed in an interview.

• It is not appropriate to discuss personal financial details in an interview.

• Salary negotiations should be done after receiving a job offer.

• Focus on discussing your skills, experience, and qualifications for the Power BI Developer role.

Row Level Security is a feature in Power BI that allows you to restrict data access at the row level based on user roles and filters.

• Row Level Security (RLS) is used to control data access in Power BI based on user roles and filters.

• It allows you to define rules that determine which rows of data a user can see.

• RLS can be applied to tables or views in the data model.

• It is commonly used to restrict access to sensitive or...read more

SUM calculates the sum of a column or expression, while SUMX calculates the sum of an expression over a table.

• SUM is used to calculate the sum of a column or expression in Power BI.

• SUMX is used to calculate the sum of an expression over a table in Power BI.

• SUM is typically used with a column reference, while SUMX is used with an expression.

• SUMX can be used to perform calculations on filtered or modified data.

• Example: S...read more

Calculated columns are computed during data loading, while measures are computed on the fly during data visualization.

• Calculated columns are created in the data model and stored in the underlying table.

• Measures are created using DAX expressions and are calculated dynamically based on the context of the visualization.

• Calculated columns consume memory and can impact performance, while measures are more efficient.

• Calculat...read more

The last working day of the company is the day on which an employee's employment ends.

• The last working day is typically determined by the company's policies and the employee's contract.

• It may be different for each employee depending on their notice period or reason for leaving.

• The last working day is usually communicated to the employee through an official letter or email.

• On the last working day, the employee may be re...read more

Cardinality in Power BI refers to the uniqueness of values in a column or relationship.

• Cardinality can be one-to-one, one-to-many, or many-to-many.

• It helps determine how data should be modeled and relationships should be established.

• For example, a one-to-many cardinality means one value in one table can be related to multiple values in another table.

There are three types of gateways in Power BI: On-premises data gateway, Personal gateway, and Power BI Gateway (Enterprise). Each serves a different purpose.

• On-premises data gateway is used to connect on-premises data sources to Power BI service.

• Personal gateway is used for individuals to refresh data from on-premises data sources.

• Power BI Gateway (Enterprise) is used for organizations to manage data refresh for cloud...read more

There are four types of joins in Power Query editor: Inner Join, Left Outer Join, Right Outer Join, and Full Outer Join.

• Inner Join combines rows from two tables based on a matching column.

• Left Outer Join returns all rows from the left table and the matching rows from the right table.

• Right Outer Join returns all rows from the right table and the matching rows from the left table.

• Full Outer Join returns all rows from bot

Power Query Editor allows various transformations on data such as filtering, sorting, merging, splitting, and aggregating.

• Filtering: Removing rows based on certain criteria.

• Sorting: Arranging rows in a specific order.

• Merging: Combining multiple tables or queries into one.

• Splitting: Dividing a column into multiple columns.

• Aggregating: Calculating summary statistics like sum, average, count, etc.