How expensive is an xVelocity relationship? The answer depends on several factors, such as column cardinality, DAX calculations, and query itself. But it general, a relationship can add a significant overhead. Consider two tables: Customer (7.1 million rows) and Account Snapshot (187 million rows) and a relationship 'Account Snapshot'[CustomerKey] -> Customer[CustomerKey]. I'll use two queries for the test. The Relationship query uses the 'Account Snapshot'[CustomerKey]->Customer[CustomerKey]…
Semantics relates to discovering the meaning of the message behind the words. In the context of data and BI, semantics represents the user's perspective of data: how the end user views the data to derive knowledge from it. A modeler translates the machine-friendly database structures and terminology into a user-friendly semantic model that describes the business problems to be solved. To address this need, you…
Struggling with DAX? Data Analysis Expressions (DAX) is the expression language of Power BI, Power Pivot, and Analysis Services Tabular. It's very powerful but it's usually perceived as complex and requiring a steep learning curve. Taught by an established expert, this two-day workshop is designed to help you become proficient with DAX. Think of this workshop as advanced Power BI training. Reserve your seat today…
Data Analysis Expressions (DAX) is the expression language of Power BI, Power Pivot, and Analysis Services Tabular. It's very powerful but it's perceived as complex, requiring a steep learning curve. I'm excited to announce a new 2-day "Applied DAX with Power BI" workshop that I designed to help you become proficient with DAX. You'll learn practical skills that will help you tackle a wide range…
Scenario: DAX has its own share of idiosyncrasies that can humble both novice and experienced users. Consider a common example where a measure attempts to return sales for the last date in the Date table. What makes this common is that many real-life calculations require measures that evaluate as of the user-specified date (as of date), which is what MAX('Date'[Date]) returns. =CALCULATE(SUM(Sales[SalesAmount]), MAX(Date[CalendarYear]) ) As…
As Microsoft announced in the "Distribute insights across the organization with Microsoft Power BI" presentation (forward to the Nikhil Gaekwad part starting at the 32 min), they've been releasing the following set of features to improve the end user experience in Power BI Service: Home (not yet available) – Personalized landing page Personal bookmarks (not yet available) – End users can create their own bookmarks Persistent…
I have a few public events in September (all in Atlanta). Sep 11-12: 2-day Power BI open enrollment workshop Sep 20: "10 Ways to Empower Your BI Strategy with Power BI" presentation for DAMA Sep 22: "Bridge Analytics and Developer Worlds with Power BI and PowerApps" presentation for SQL Saturday – BI Sep 25: Meeting of Atlanta MS BI and Power BI Group at the…
Question: What's the maximum dataset size Power BI can support? Answer: As of now (Sep 1, 2018), the maximum dataset size that Power BI Pro can support is 1 GB. The maximum dataset size with Power BI Premium and Power BI Embedded is 10 GB but it depends on the SKU purchased. Power BI Premium Plan Power BI Embedded Plan Max Dataset Size and Memory P1…
A Power BI training or assessment won't be complete unless I get hammered on the Power BI sharing limitations. So far, I could only mumble something to the extent of "I agree that Power BI sharing sucks big time", look for the exit and suggest an unplanned break. Fortunately, it looks like quantitative accumulations from unhappy corporate customers have resulted in qualitative changes as Microsoft…
