Capgemini Tableau Developer Interview Questions, Process, and Tips

Q1. Live vs extract connection
Ans. 
Live connection allows real-time data updates while extract connection improves performance by storing data locally.
• Live connection connects directly to the data source for real-time updates.

• Extract connection stores a snapshot of the data locally for faster performance.

• Live connection is suitable for small datasets or when real-time updates are crucial.

• Extract connection is recommended for large datasets or when perfo
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Q2. Joins vs blending
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Joins are used to combine data from different tables based on a related column, while blending is used to combine data from different data sources within the same worksheet.
• Joins are used when you have related data in different tables and want to combine them based on a common column.

• Blending is used when you have data from different sources like Excel and SQL and want to combine them in the same worksheet.

• Joins requir...read more
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Q1. What is the order of operations of the Tableau filters?
Ans. 
The order of operations of Tableau filters is context filters, extract filters, data source filters, and then dimension filters.
• Context filters are applied first, followed by extract filters, data source filters, and finally dimension filters.

• Context filters create a temporary table that only includes the data relevant to the filter.

• Extract filters are applied to the data extract before it is loaded into Tableau.

• Data s...read more
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Q2. What is a context filter?
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A context filter is a filter that is applied to a specific worksheet or dashboard, affecting only the data displayed in that context.
• Context filters are used to filter data at a more granular level within a worksheet or dashboard.

• They allow users to focus on specific data points without affecting the overall data set.

• Context filters can be created by right-clicking on a field in the Filters shelf and selecting 'Add to ...read more
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Q3. What do you mean by rolling 3,6,12 months? How it is different than YTD, MTD, QTD?
Ans. 
Rolling 3, 6, 12 months refers to analyzing data over the past 3, 6, or 12 months, while YTD, MTD, QTD refer to year-to-date, month-to-date, quarter-to-date.
• Rolling 3, 6, 12 months involves looking at data over the past 3, 6, or 12 months, providing a trend analysis over a specific time period.

• YTD (Year-to-Date) refers to data from the beginning of the current year up to the present date.

• MTD (Month-to-Date) refers to d...read more
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Q4. How will you calculate %YoY growth?
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To calculate %YoY growth, subtract the previous year's value from the current year's value, divide by the previous year's value, and multiply by 100.
• Calculate YoY growth = ((Current Year Value - Previous Year Value) / Previous Year Value) * 100

• For example, if sales were $100 in 2020 and $120 in 2021, YoY growth = (($120 - $100) / $100) * 100 = 20%
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Q1. Types of LODs in Tableau
Ans. 
Types of LODs in Tableau include Fixed, Include, and Exclude.
• Fixed LOD: Computes a value using specified dimensions, regardless of the visualization level.

• Include LOD: Computes a value at a specified level of detail, including dimensions not in the visualization.

• Exclude LOD: Computes a value at a specified level of detail, excluding dimensions not in the visualization.
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Logical reasoning , verbal ability and quantitative ability

Q1. How to create dashboards
Ans. 
Creating dashboards involves selecting relevant data, designing visualizations, and arranging them in a user-friendly layout.
• Identify key metrics and data sources to include in the dashboard

• Design appropriate visualizations such as bar charts, line graphs, and maps

• Arrange visualizations in a logical and intuitive layout

• Use filters and parameters to allow users to interact with the data

• Add annotations and titles to prov
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Q1. Where do you see yourself in 5 years
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