Tag: Data
All the articles with the tag "Data".
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Delta Lake vs. Traditional Data Lakes: Key Differences and Vendor Options
Introduction As data-driven organizations scale their analytics and machine learning workloads, the limitations of traditional data lakes become more apparent. Delta Lake is an open-source storage
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Understanding Slowly Changing Dimensions (SCD) in Data Warehousing
When dealing with data warehouses, handling changes in dimension data over time is crucial. Unlike operational databases where updates are straightforward, data warehouses require preserving
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Modes and Examples of KPIs in Data Analysis Expressions (DAX)
Last Year Comparison When analyzing sales performance, it is often useful to compare the current year's sales with the same period in the previous year. To do this, we create several calculated
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Understanding Surrogate Keys in Databases
When designing relational databases, one crucial decision is how to uniquely identify each record in a table. This is where surrogate keys come into play. Unlike natural keys, which derive from
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Understanding Pagination vs. Batch Processing in Data Handling
When working with large datasets, developers often face the challenge of efficiently extracting, processing, and managing data. Two commonly used techniques for handling such data efficiently are
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Handling Null Values in Data: Algorithms and Strategies
Null values are a common challenge in data analysis and machine learning. Dealing with them effectively is essential to ensure the reliability of your insights and models. In this post, we’ll explore
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Adding Custom Columns to Your Date Table in Power BI
Introduction A Date Table is an integral part of building robust and insightful Power BI reports. While a basic Date Table allows for time-based filtering and analysis, custom columns can add even
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Are Indexes a Good Strategy for Analytical Databases?
Indexes are a well-known optimization technique in database management, often associated with improving query performance. However, whether they are a good strategy for analytical databases depends on