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PySpark Functions Real Use Cases
PySpark is an API for Apache Spark in Python that enables big data processing and analytics, featuring a wide array of built-in functions. These functions facilitate data manipulation, aggregation, and statistical analysis. They include column, aggregate, window, string, and date-time functions, allowing efficient processing of large datasets in a distributed… Read More ⇢
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Unity Catalog in Databricks – Key Multiple-Choice Questions
Databricks Unity Catalog is a governance solution for managing data and AI assets in the Databricks Lakehouse. It enables fine-grained access control, centralized metadata management, and integration with workspaces. A set of multiple-choice questions has been created to help users master Unity Catalog’s key features, best practices, and practical applications. Read More ⇢
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Python Theory Questions for Interviews
This post offers 20 multiple-choice questions to help candidates prepare for Python interviews, covering essential topics such as data types, functions, errors, and control statements. Each question includes the correct answer to aid in self-assessment and boost confidence for interview performance. Read More ⇢
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Exploring the Latest Delta Lake Features in Databricks
Delta Lake, built on Apache Spark, enhances data lakes by improving reliability, performance, and transformation capabilities. Its recent features include enhanced data versioning, optimized Z-ordering, schema evolution, robust time travel, data quality constraints, scalable metadata handling, support for multi-cloud, unified data processing, improved governance, and MLFlow integration, revolutionizing data management. Read More ⇢
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Reading MySQL and Oracle Databases into Databricks: Step-by-Step Tutorial
Learn how to securely and efficiently read data from MySQL and Oracle databases into Databricks using JDBC, secrets management, and Delta tables. Includes best practices for performance, partitioning, and schema evolution. Read More ⇢
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Delta Live Tables (DLT) Optimization Tips: Improve Performance, Quality & Reliability
Learn the top Delta Live Tables (DLT) best practices to build reliable, cost-efficient, and high-performing data pipelines in Databricks. Complete 2025 guide. Read More ⇢
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Mastering SQL Date Extraction and Monthly Trends Using LAG()
Learn how to extract the year from a date in MySQL and SQL Server, and analyze monthly customer order growth using the SQL LAG() window function. Includes sample tables, inserts, and output. Read More ⇢
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Top 25 Snowflake Interview Questions & Answers for 2025 | Snowflake Quiz
Prepare for your Snowflake interview with our 25 advanced and beginner Snowflake quiz questions. Learn about virtual warehouses, Time Travel, Snowpipe, streams, tasks, data sharing, and more. Includes answers and explanations for effective Snowflake prep Read More ⇢
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Hadoop vs AWS Glue vs Databricks vs Snowflake: Complete 2025 Comparison
Compare Hadoop, AWS Glue, Databricks, and Snowflake in 2025. Explore architecture, fault tolerance, parallel processing, scalability, and cost to choose the best platform for ETL, analytics, and machine learning. Read More ⇢
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