Insights from the Gartner Data & Analytics Summit in London

May 28, 2024

Analytics Data Integration Event

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I had the opportunity of attending the Gartner Data & Analytics Summit in London from May 13th to 15th. This three-day event featured over 100 sessions, many of which ran concurrently, making it impossible to capture everything. However, I would like to share my top takeaways from this insightful conference.

D&A generate value

It’s usually very difficult to evaluate the return of the governance and management of the D&A. Gartner made a lot of studies and polls to bring some concrete evidence.

Studies show a good D&A maturity impact positively the financial performance of firms by 30%.

Governance is a keystone of D&A maturity, but its return is highly under valuated.

Firms should focus on business outcomes rather than ROI and prioritize Execution over strategy.

Evaluating the return on governance and management of Data & Analytics (D&A) is often challenging. Recent studies and polls conducted by Gartner provide some evidence to help our efforts.

A a strong D&A maturity can boost a firm’s financial performance by 30%.

Governance is a critical cornerstone of this D&A maturity, yet its value is frequently underestimated. To harness the full potential of our D&A initiatives, it’s essential that we shift our focus from traditional ROI metrics to broader business outcomes.

Moreover, prioritizing execution over strategy can drive more tangible results. By emphasizing practical implementation and operational excellence, we can ensure that our D&A governance delivers maximum value to the organization.

AI and GenAI – the elephant in the room

Everyone is talking about AI and GenAI, and it’s widely accepted that GenAI represents a disruption on par with the creation of the internet itself. The pressing question is: how can we harness this disruption to meet our own needs?

Studies show that firms which have designated AI as a strategic priority have outperformed their peers by 80% over the past nine years. This highlights the transformative potential of AI when integrated into a company’s core strategy.

I could hear on many sessions the “AI-ready Data” concept. Mainly compared with Analytics data, above quality, compliance, and accessibility, AI require more metadata, context, labeling. This can only be achieved through mature governance practices.

Learning & collective intelligence

In today’s fast-paced and data-rich environment, strong centralized models struggle to keep up with the volume of data and the speed at which decisions need to be made. The concept of collective intelligence: distributing decision-making power to local groups rather than centralizing it with top management.

This approach can be effectively implemented by focusing on several key areas:

Access to the Right Data: Ensure that all team members have access to the relevant and necessary data. This empowers local groups to make informed decisions quickly and accurately.

Sense of Purpose: Clearly communicate the organization’s vision and goals. When teams understand the bigger picture and their role within it, they are more motivated and aligned with the company’s objectives.

Autonomy: Granting teams the autonomy to make decisions fosters innovation and responsiveness. Local groups are often closer to the issues at hand and can act more swiftly than a centralized authority.

Literacy: Invest in training programs that enhance data and AI literacy skills. Equipping teams with the knowledge to understand and leverage data effectively is crucial for informed decision-making.

Data Fabric and Data Mesh

During the summit, two key architectural approaches were frequently discussed: Data Fabric and Data Mesh. While sometimes viewed as opposing strategies, they can also be seen as complementary.

Data Fabric focuses on leveraging the extended metadata provided by our existing platforms. Its primary goal is to “activate” this metadata to facilitate automated enhancements and suggestions.

Data Mesh, on the other hand, decentralizes data delivery and empowers business-driven D&A initiatives. Its core principles include treating Data as a Product.

Combining these approaches can lead to a scalable, flexible data architecture.

Data Fabric’s automation capabilities can enhance the efficiency of decentralized data management within a Data Mesh framework.

The extended metadata in Data Fabric can support the productization efforts of Data Mesh, ensuring that data products are enriched with comprehensive metadata.

Data and Analytics Governance Is Key to Your Success

As final takeaway as shown in the previous paragraph, Governance was a central theme in many of the sessions I attended. The modern approach to governance emphasizes a federated or cooperative model rather than a traditional centralized one. This approach aligns more closely with our business strategy and desired outcomes, rather than focusing solely on the data itself.

Governance should be driven by the business strategy and desired outcomes. By focusing on what we aim to achieve as an organization, we can ensure that our governance efforts are relevant and impactful.

Author: Xavier GROSFILS, COO at AKABI

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Enhancing Real-Time Data Processing with Databricks: Apache Kafka vs. Apache Pulsar

May 28, 2024

Analytics Data Integration Microsoft Azure

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In the era of big data, real-time data processing is essential for organizations seeking immediate insights and the ability to respond swiftly to changing market conditions. Apache Kafka and Apache Pulsar are two of the most popular platforms for managing streaming data. Their integration with Databricks, a powerful analytics platform built on Apache Spark, enhances these capabilities, providing robust solutions for real-time data management. This article explores the features of Kafka and Pulsar, compares their strengths, and provides guidance on which to choose based on specific use cases.

Apache Kafka: A Standard in Data Streaming

Apache Kafka is a distributed streaming platform originally developed by LinkedIn and later donated to the Apache Software Foundation. Kafka’s architecture is based on a distributed log, where data is written to “topics” divided into partitions.

Topics act as categories for data streams, while partitions are the individual logs that store records sequentially. This division allows Kafka to scale horizontally, enabling high throughput and parallel processing. Partitions also ensure fault tolerance by replicating data across multiple brokers, which maintains data integrity and availability.

Kafka excels in scenarios that require rapid ingestion and real-time processing of large volumes of data. Its ecosystem includes Kafka Streams for stream processing, Kafka Connect for integrating various data sources, and KSQL for querying data streams with SQL-like syntax. These features make Kafka ideal for applications such as monitoring, log aggregation, and real-time analytics.

Key Features of Kafka:

  • High Throughput and Low Latency: Capable of handling millions of messages per second with minimal delay, making it suitable for applications that require quick data processing.
  • Durable Storage: Messages can be stored for a configurable retention period, allowing for replay and historical analysis.
  • Mature Ecosystem: Includes robust tools for stream processing, data integration, and real-time querying.

Apache Pulsar: The Next Generation of Streaming

Apache Pulsar is a distributed messaging and streaming platform developed by Yahoo and now managed by the Apache Software Foundation. Pulsar’s architecture separates message delivery from storage using a two-tier system comprising Brokers and BookKeeper nodes. This design enhances flexibility and scalability.

Brokers handle the reception and delivery of messages, while BookKeeper nodes manage persistent storage. ZooKeeper plays a crucial role in this architecture by coordinating the metadata and configuration management. This separation allows Pulsar to scale storage independently from message handling, providing efficient resource management and improved fault tolerance. Brokers ensure smooth data flow, BookKeeper nodes ensure data durability, and ZooKeeper maintains system coordination and consistency.

Pulsar supports advanced features such as multi-tenancy, geographic replication, and transaction support. Its multi-tenant capabilities allow multiple teams to share the same infrastructure without interference, making Pulsar suitable for complex, large-scale applications. Additionally, Pulsar supports various APIs and protocols, facilitating seamless integration with different systems.

Key Features of Pulsar:

  • Multi-Tenancy: Supports multiple tenants with resource isolation and quotas, providing efficient resource management.
  • Advanced Features: Includes geographic replication for data availability across data centers and transaction support for consistent message delivery.
  • Flexible Integrations: Supports various APIs and protocols, enabling easy integration with different systems.

Comparing Apache Kafka and Apache Pulsar

While both Kafka and Pulsar are designed for real-time data streaming, they have distinct characteristics that may make one more suitable than the other depending on specific use cases.

Performance and Scalability: Kafka is known for its high throughput and low latency, making it ideal for applications requiring rapid data ingestion and processing. It is well-suited for high-performance use cases where low latency is critical. Pulsar, on the other hand, offers similar performance levels but excels in scenarios requiring multi-tenancy and seamless scaling. Its architecture separating compute and storage makes Pulsar preferable for applications needing flexible scaling and multi-tenant support.

Architecture and Flexibility: Kafka uses a simpler, monolithic architecture which can be easier to deploy and manage for straightforward use cases. This simplicity can be advantageous for quick and efficient setup. In contrast, Pulsar’s two-tier architecture provides more flexibility, especially for applications requiring geographic replication and fine-grained resource management. Pulsar is better suited for complex architectures needing advanced features.

Feature Set: Kafka’s extensive ecosystem, including tools like Kafka Streams, Kafka Connect, and KSQL, makes it a comprehensive solution for stream processing and real-time querying. This makes Kafka ideal for use cases that leverage its mature set of tools. Pulsar includes advanced features like native multi-tenancy, message replication across data centers, and built-in transaction support. These features make Pulsar preferable for applications requiring sophisticated capabilities.

Community and Ecosystem: Kafka has a larger and more mature ecosystem with widespread adoption across various industries, making it a safer bet for long-term projects needing extensive community support. Pulsar, while rapidly growing, offers cutting-edge features particularly appealing for cloud-native and multi-cloud environments. Pulsar is more appropriate for modern, cloud-native applications.

Integration with Databricks

Databricks, built on Apache Spark, leverages both Kafka and Pulsar to provide powerful and scalable real-time data processing capabilities. Here’s how these integrations enhance Databricks:

Databricks offers built-in connectors for reading and writing data directly from & to Kafka, enabling users to build real-time data pipelines using Spark Structured Streaming. This facilitates the transformation and analysis of data streams in real-time.

Similarly, Databricks supports Apache Pulsar, allowing for real-time data streaming with exactly-once processing semantics. Pulsar’s features such as geographic replication and transaction support enhance the resilience and reliability of streaming applications on Databricks.

Benefits of Integration

Integrating Kafka and Pulsar with Databricks provides several benefits. The scalability of both platforms allows for handling large volumes of real-time data without compromising performance. Pulsar’s multi-tenant capabilities and Kafka’s extensive features provide flexible integration tailored to specific business needs. Databricks also offers robust tools for access management and data governance, enhancing the security and reliability of streaming solutions.

Conclusion

Integrating Kafka and Pulsar with Databricks allows organizations to leverage leading streaming technologies to build efficient and scalable real-time data pipelines. By combining the power of Spark with Kafka’s resilience and Pulsar’s flexibility, Databricks provides a robust platform to meet the growing needs of real-time data processing.

For high-speed, low-latency applications, Kafka is the preferred choice. For complex, multi-tenant environments requiring advanced features like geographic replication and transaction support, Pulsar is more suitable.

Author: Pierre-Yves RICHER, Data Engineering Practice Leader at AKABI

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Getting started with the new Power BI Visual Calculations feature!

March 25, 2024

Analytics Business Inteligence

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Power BI’s latest feature release, Visual Calculations, represents a paradigm shift in how users interact with data.     

Rolled out in February 2024 as a preview, this groundbreaking addition enables users to craft dynamic calculations directly within visuals. It opens up a new era of simplicity, flexibility and power in data analysis.

Visual Calculations are different from traditional calculation methods in Power BI. They are linked to specific visuals instead of being stored within the model. This simplifies the creation process and improves maintenance and performance. Visual Calculations allow users to generate complex calculations seamlessly, without the challenges of filter context and model intricacies.

This article explores Visual Calculations, including their types, applications, and transformative impact for Power BI users. Visual Calculations can revolutionize the data analysis landscape within Power BI by simplifying DAX complexities and enhancing data interaction.

Enable visual calculations

To enable this preview feature, navigate to Options and Settings > Options > Preview features and select Visual calculations.  After restarting the tool, Visual Calculations will be enabled.

Adding a visual calculation

To add a visual calculation, select a visual and then select the New calculation button in the ribbon:

The visual calculations window becomes accessible when you enter Edit mode. Within the Edit mode interface, you’ll encounter three primary sections, arranged sequentially from top to bottom:

  • The visual preview which shows the visual you’re working with
  • A formula bar where you can define your visual calculation
  • The visual matrix which shows the data used for the visual, and displays the results of visual calculations as you add them

To create a visual calculation, simply input the expression into the formula bar. For instance, within a visual displaying Net Sales by Year, you can add a visual calculation to determine the running total by entering:

Running total = RUNNINGSUM([Net Sales])

As you add visual calculations, they’re shown in the list of fields on the visual:

Additionally, the visual calculation is shown on the visual:

Without visual calculations, it’s a bit more complex: you must combine several DAX functions to get the same result. The DAX equivalent at model level would be the following formula:

Running total (model level) = 
VAR MaxDate = MAX('Order Date'[Date])
RETURN
    CALCULATE(
        SUM('Fact Orders'[Net Sales]),
        'Order Date'[Date] <= MaxDate,
        ALL('Order Date')
    )


Use fields for calculations without showing them in the visual

In Edit mode for visual calculations, you can hide fields from the visual. For example, if you want to show only the running total visual calculation, you can hide Net Sales from the view:

Hiding fields doesn’t remove them from the visual, so your visual calculations can still refer to them and continue to work. A hidden field will still appear in the visual matrix but will simply not appear in the resulting visual. It’s a very good idea from Microsoft, and a very practical one! As a good practice, we recommend to include hidden fields only if they are necessary for your visual calculations to work.

Templates available for common scenarios

To start with, several templates are already available, covering the most common scenarios:

  • Running sum: Calculates the sum of values, adding the current value to the preceding values. Uses the RUNNINGSUM function.
  • Moving average: Calculates an average of a set of values in a given window by dividing the sum of the values by the size of the window. Uses the MOVINGAVERAGE function.
  • Percent of parent: Calculates the percentage of a value relative to its parent. Uses the COLLAPSE function.
  • Percent of grand total: Calculates the percentage of a value relative to all values, using the COLLAPSEALL function.
  • Average of children: Calculates the average value of the set of child values. Uses the EXPAND function.
  • Versus previous: Compares a value to a preceding value, using the PREVIOUS function.
  • Versus next: Compares a value to a subsequent value, using the NEXT function.
  • Versus first: Compares a value to the first value, using the FIRST function.
  • Versus last: Compares a value to the last value, using the LAST function.

Conclusion

Visual Calculations bridge the gap between calculated columns and measures, offering the simplicity of context from calculated columns and the dynamic calculation flexibility of measures. Visual Calculations offer improved performance compared to detail-level measures when operating on aggregated data within visuals. They can refer directly to visual structure, providing users with unprecedented flexibility in data analysis.

This new feature will be very useful for those who are new to Power BI and for whom the DAX language can be a real challenge. It will simplify some calculation scenarios!

Author: Vincent HERMAL, Data Analytics Practice Leader at AKABI

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AKABI’s Consultants Share Insights from Dataminds Connect 2023

November 20, 2023

Analytics Business Inteligence Data Integration Event Microsoft Azure + 1

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Dataminds Connect 2023, a two-day event taking place in the charming city of Mechelen, Belgium, has proven to be a cornerstone in the world of IT and Microsoft data platform enthusiasts. Partly sponsored by AKABI, this event is a gathering of professionals and experts who share their knowledge and insights in the world of data.

With a special focus on the Microsoft Data Platform, Dataminds Connect has become a renowned destination for those seeking the latest advancements and best practices in the world of data. We were privileged to have some of our consultants attend this exceptional event and we’re delighted to share their valuable feedback and takeaways.

How to Avoid Data Silos – Reid Havens

In his presentation, Reid Havens emphasized the importance of avoiding data silos in self-service analytics. He stressed the need for providing end users with properly documented datasets, making usability a top priority. He suggested using Tabular Editor to hide fields or make them private to prevent advanced users from accessing data not meant for self-made reports. Havens’ insights provided a practical guide to maintaining data integrity and accessibility within the organization.

Context Transition in DAX – Nico Jacobs

Nico Jacobs took on the complex challenge of explaining the concept of “context” and circular dependencies within DAX. He highlighted that while anyone can work with DAX, not everyone can understand its reasoning. Jacobs’ well-structured presentation made it clear how context influences DAX and its powerful capabilities. Attendees left the session with a deeper understanding of this essential language.

Data Modeling for Experts with Power BI – Marc Lelijveld

Marc Lelijveld’s expertise in data modeling was on full display as he delved into various data architecture choices within Power BI. He effortlessly navigated topics such as cache, automatic and manual refresh, Import and Dual modes, Direct Lake, Live Connection, and Wholesale. Lelijveld’s ability to simplify complex concepts made it easier for professionals to approach new datasets with confidence.

Breaking the Language Barrier in Power BI – Daan Lambrechts

Daan Lambrechts addressed the challenge of multilingual reporting in Power BI. While the tool may not inherently support multilingual reporting, Lambrechts showcased how to implement dynamic translation mechanisms within Power BI reports using a combination of Power BI features and external tools like Metadata Translator. His practical, step-by-step live demo left the audience with a clear understanding of how to meet the common requirement of multilingual reporting for international and multilingual companies.

Lessons Learned: Governance and Adoption for Power BI – Paulien van Eijk & Teske van Maaren

This enlightening session focused on the (re)governance and (re)adoption of Power BI within organizations where Power BI is already in use, often with limited governance and adoption. Paulien van Eijk and Teske van Maaren explored various paths to success and highlighted key concepts to consider:

  • Practices: Clear and transparent guidance and control on what actions are permitted, why, and how.
  • Content Ownership: Managing and owning the content in Power BI.
  • Enablement: Empowering users to leverage Power BI for data-driven decisions.
  • Help and Support: Establishing a support system with training, various levels of support, and community.

Power BI Hidden Gems – Adam Saxton & Patrick Leblanc

Participating in Adam Saxton and Patrick Leblanc’s “Power BI Hidden Gems” conference was a truly enlightening experience. These YouTube experts presented topics like Query folding, Prefer Dual to Import mode, Model properties (discourage implicit measures), Semantic link, Deneb, and Incremental refresh in a clear and engaging manner. Their presentation style made even the most intricate aspects of Power BI accessible and easy to grasp. The quality of the presentation, a hallmark of experienced YouTubers, made the learning experience both enjoyable and informative.

The Combined Power of Microsoft Fabric for Data Engineer, Data Analyst and Data Governance Manager – Ioana Bouariu, Emilie Rønning and Marthe Moengen

I had the opportunity to attend the session entitled “The Combined Power of Microsoft Fabric for Data Engineer, Data Analyst, and Data Governance Manager”. The speakers adeptly showcased the collaborative potential of Microsoft Fabric, illustrating its newfound relevance in our evolving data landscape. The presentation effectively highlighted the seamless collaboration facilitated by Microsoft Fabric among data engineering, analysis, and governance roles. In our environment, where these roles can be embodied by distinct teams or even a single versatile individual, Microsoft Fabric emerges as a unifying force. Its adaptability addresses the needs of diverse profiles, making it an asset for both specialized teams and agile individuals. Its potential promises to open exciting new perspectives for the future of data management.

Behind the Hype, Architecture Trends in Data – Simon Whiteley

I thoroughly enjoyed Simon Whiteley’s seminar on the impact of hype in technology trends. He offered valuable insights into critically evaluating emerging technologies, highlighting their journey from experimentation to maturity through Gartner’s hype curve model.

Simon’s discussion on attitudes towards new ideas, the significance of healthy skepticism, and considerations for risk tolerance was enlightening. The conclusion addressed the irony of consultants cautioning against overselling ideas, emphasizing the importance of skepticism. The section on trade-offs in adopting new technologies provided practical insights, especially in balancing risk and fostering innovation.

In summary, the seminar provided a comprehensive understanding of technology hype, offering practical considerations for navigating the evolving landscape. Simon’s expertise and engaging presentation style made it a highly enriching experience.

In Conclusion

Dataminds Connect 2023 was indeed a remarkable event that provided valuable insights into the world of data. We want to extend our sincere gratitude to the organizers for putting together such an informative and well-executed event. The knowledge and experiences gained here will undoubtedly contribute to our continuous growth and success in the field. We look forward to being part of the next edition and the opportunity to continue learning and sharing our expertise with the data community. See you next year!

Vincent Hermal, Azure Data Analytics Practice Leader
Pierre-Yves Richer, Azure Data Engineering Practice Leader
avec la participation très précieuse de Sophie Opsommer, Ethan Pisvin, Pierre-Yves Outlet et Arno Jeanjot

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DP-500 : How to successfully pass the exam?

January 27, 2023

Analytics Microsoft Azure

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Are you looking to earn the Microsoft certification DP-500: Designing and Implementing Enterprise-Scale Analytics Solutions Using Microsoft Azure and Microsoft Power BI? If so, you’re not alone! This certification is highly sought after by professionals looking to advance their careers in the field of data analytics. In this LinkedIn article, we’ll provide some expert tips to help you prepare for and pass this important certification exam.

First, let’s start by looking at what this certification covers. The DP-500 certification is geared towards professionals who are responsible for designing and implementing large-scale analytics solutions using Microsoft Azure Synapse Analytics and Microsoft Power BI. This includes tasks such as designing data pipelines, managing data storage, and creating dashboards and reports for business users.

To prepare for the DP-500 exam, it’s important to have a strong understanding of the following topics:

Microsoft Azure: This includes knowledge of Azure data storage options (such as Azure SQL Database and Azure Data Lake), as well as Azure data processing and analytics tools. You’ll also need to be familiar with Microsoft Purview.

Microsoft Power BI: This includes knowledge of Power BI desktop and online, as well as how to design and publish reports and dashboards using Power BI. You’ll also need to be familiar with Power BI data modeling and visualization techniques.

Data management and data governance: You’ll need to understand how to manage data at scale, including tasks such as data cleansing, data transformation, and data security.

Data visualization: You’ll need to be able to design effective data visualizations that effectively communicate insights to business users.

Some advice from one of our consultants

It is understandable that you may be feeling anxious or unsure about your chances of success on the DP-500 exam, especially if you have not had previous experience with Azure Synapse Analytics & Microsoft Purview. Prior to preparing for the exam, I had not had any experience using those two tools. These are important technologies that are covered on the exam, and it may have been necessary for you to spend additional time studying and gaining familiarity with them in order to fully prepare for the exam.

It is important to note that four weeks of study is a reasonable amount of time to prepare for the exam, as long as you use your study time effectively and focus on the most important exam objectives

So, what can you do to prepare for the DP-500 exam? Here are a few tips:

No alt text provided for this image

Use Microsoft’s official certification training materials: These materials are designed specifically to help you prepare for the DP-500 exam and are a great place to start.

Take online courses: There are many online courses available that can help you deepen your understanding of the topics covered on the DP-500 exam. One website that you might find helpful is Datamozart. This website offers a range of courses and resources for data professionals, including those preparing for the DP-500 exam.

Watch YouTube videos: There are many YouTube channels that offer helpful content for those preparing for the DP-500 exam. One channel that you might find particularly useful is Azure Synapse Analytics. This channel offers a range of videos on topics related to Azure Synapse Analytics, which is a key tool covered on the DP-500 exam.

Get insights from experts: Consider reaching out to experts in the field for advice on how to prepare for the DP-500 exam. Two Data Platform MVPs, Andy Cutler and Nikola Ilic, are known for their great explanations and insights on data platform topics. You might find it helpful to follow their blogs or watch their videos for additional guidance on preparing for the DP-500 exam.

Practice with sample questions: It is understandable that you may be looking for sample questions to help you prepare for the DP-500 exam. However, it is important to note that the quality and reliability of sample questions can vary greatly. Some sample questions may not accurately reflect the content or difficulty level of the actual exam, and using them as your sole source of preparation may not be sufficient to fully prepare you for the exam. Examtopic is a great website that provides information and resources for various IT certification exams. When I studied for the exam, the site did not contain any practice questions but now you can find sample questions here. It will probably help you a lot.

Gain hands-on experience: There’s no substitute for real-world experience when it comes to preparing for the DP-500 exam. Try working on projects using Azure and Power BI to get a feel for how these tools

I wish you the best of luck as you prepare for the DP-500 exam. Remember to stay focused, stay motivated, and keep up with your studies. With hard work and dedication, you can succeed on the exam and achieve your certification goals.

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