Power BI Tutorials

When you want to analyze and visualize your data in Power BI, the first thing you need is to connect to a data source. The data you will use in Power BI is taken from a dataset. The source of these datasets is called the data source. There are numerous

When you import multiple tables, you will most likely use data from all of them when analyzing them. Relationships between these tables are required to calculate results correctly and display accurate data in your reports. Power BI Desktop makes it simple to establish these connections. You won't have to do

You may discover that your report performs fine in test and development environments but has performance concerns when it is sent to production for widespread use. Poor performance implies that it takes longer to load report pages and update visuals for report users. This subpar performance degrades the user experience.

We may connect to many different data sources using Power BI. Our data, however, may be incomplete, inaccurate, disjointed, or not in the format we require, or we may wish to combine data from multiple sources. The Power Query Editor is a Power BI Desktop component that allows you to

As you collect data, you summarize it and present it at a higher level. For instance, you might summarize all sales information and organize it by date, client, product, etc. Aggregation allows you to concentrate on key data and enhance query performance by reducing table sizes in the data model.

Sometimes the data you analyze does not contain the field required for the desired results. Calculated columns come into play here. Calculated columns employ Data Analysis Expressions (DAX) formulas for various operations, including defining column values, combining text values from multiple columns, and calculating a numeric value from other values.