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Data Engineering User Guide

Data Engineering User Guide #sql #database #language #query #schema #ddl #dml#analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

Even though learning about Data engineering is a daunting task, one can have a clear understanding of this filed by following a step-by-step approach. In this blog post, we will go over each of the steps and relevant steps you can follow through as a tutorial to understand Data Engineering and related topics. Concepts on Data In this section, we will learn about data and its quality before…

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Data Observability and Its Importance in Modern Data Tech Stack

What is Data Observability and Importance in Modern Data Tech Stack #sql #query #dml#analytics #engineering #datapipeline #dataengineering #science #news #technology #data #trends #tech #spark #hdfs #bigdata

Introduction In today’s data-driven technology landscape, organization rely on data pipelines to fuel their decision process and business decisions. However, with the rise in volume of data and velocity in which it’s increasing maintaining quality, reliability and trust worthiness of the data in cloud environment have become a challenging task. This is where data observability comes into play…

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Understanding difference between Stateless and Stateful Systems

What is the difference between Stateless and Stateful System ? #sql #database #language #query #schema #analytics #engineering #distributedcomputing #stateful #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #stateless

When designing or architecting a software application, a system can be designed as stateless or stateful, with its own strength and weaknesses. Fundamental difference between the system is how the system process request or manages data. In this blog post, we will explore the design principles, use cases their advantages of stateless and Stateful systems, Stateless Systems In Stateless system,…

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What is Data Migration?

What is Data Quality? #dataquality #sql #database #language #query #schema #ddl #dml#analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

What is Data Migration? Data migration is the process of migrating the data from one system to another or one location to another, or from one data format to another. With the modernization effort going on in various industries, many companies are trying to migrate their existing data from private cluster to cloud based environment. In this blog post, we’ll delve into the explore data migration…

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What is Large Language Models(LLM)?

Large Language Models #llm #datascience #dataengineering #machinelearning

Large Language models or LLMs are Artificial Intelligence(AI) software that uses machine learning and other models to generate and recognize text and similar content. They use neural network models called transformation models that can learn context and meaning by tracking relationships in sequential data. They are trained in large columns of data with millions or billions of parameters. Why is…

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Aggregate and Scalar Functions in Database

What is Aggregate and Functions in Database? #sql #database #language #query #schema #ddl #dml#analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

What is Aggregate Function? An aggregate function in a database is a function that operates on a set of values and returns a single aggregated value as a result. These functions are commonly used in SQL queries to perform calculations and operations across multiple or group rows. They are often used with the GROUP BY and HAVING clause of the SELECT statement. Commonly used SQL Aggregate…

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What is Cache?And How it Works?

What is Cache in Software Engineering? #sql #database #language #query #schema #ddl #dml#analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

In Software engineering, caching is a process of storing frequently accessed expensive data in a temporary state area called cache. The main goal of caching is to improve the performance and efficiency of applications by reducing the time and resources to retrieve data. It is like short-term memory containing the most recently accessed items, which use a limited amount of space but is faster than…

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What is a Data Pipeline?

What is Data Pipeline? #sql #database #language #query #schema #ddl #dml#analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

A data pipeline is a process that extracts data from various sources, transforms it into a suitable format, and is loaded to a data warehouse or other data storage layer. Data pipelines are an integral part of Data engineering that produces data suitable for data owners or downstream users to analyze and produce and business-ready datasets to consume. It enables organizations to collect, store,…

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SQL GROUP By Vs HAVING Clause

What is SQL Group by and HAVING Clause? #sql #database #language #query #schema #ddl #dml#analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

In relational databases or SQL, both the GROUP BY and HAVING clauses are used in combination with aggregate functions to perform operations on grouped data. However, they are used for different purposes in a query.  GROUP BY Clause: The GROUP BY clause is used to group rows that have the same values in specified columns into summary rows, like a summary report. It is typically used with…

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What is the Fill factor in SQL Server?

What is Fill Factor in SQL? #sql #database #language #query #schema #ddl #dml#analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

In the Microsoft SQL server, the fill factor is the setting that specifies the percentage of space on each leaf-level page to be filled with data when the index is created or rebuilt. It controls the amount of free space left on the pages to reduce fragmentation and improve performance in the database Important Points of Fill Factor in Database Default Fill Factor: In SQL Server, the default…

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Safeguarding Data Privacy: The Vital Role of Computer Security

How do you safeguard Data Privacy? #analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata #communication #privacy #security #pii #internet #internet

In today’s modern and digital age of data-driven movements, data plays a crucial role in our personal and professional lives. Everything we do generates data in this digital world, both public and private. Data sets are generated from our devices connected through networks, smart cars, payment systems, smart homes, shopping habits, and transportation systems. These data are used to gather…

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What is a Flat File ? And Why is It Important?

What is Flat File? And Why is it important? #file #ascii #ibm #iot #database #analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

What is a Flat File? A flat file or a sequential file is a type of file that stores data in the form of columns and rows to emulate a database table. It is like a table with a single record per line. Since it stores the data in the form of rows and volumes as in a database, it is also known as a text database. This file format-based database was developed and implemented by the International…

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What is Job Tracker in Hadoop?

What is Job Tracker in Hadoop Framework? #analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #hadoop #spark #hdfs #bigdata

JobTracker is a daemon service that is used for submitting and tracking MapReduce(MR) jobs in the Apache Hadoop framework. In a typical production cluster, JobTracker runs on a separate machine through its own JVM process. It is an essential daemon for MR v1 but is replaced by Resource Manager/Application Manager in MR V2. It is the single point of failure for the Hadoop MapReduce service, as it…

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Starting Apache Spark Application

Starting Apache Spark Applications. #spark #bigdata #hadoop #scala #analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech

Spark Context Spark Context is the main entry point for Apache Spark functionality, which represents the connection to a Spark cluster. It can be used to create RDDs, accumulators, and broadcast variables on that cluster. We can only have one SparkContext active per JVM (Java Virtual Machine). We need to stop the active SparkContext before creating a new one. Spark Context Creation…

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Bash Scripts Interview Questions

Bash Script Interview Questions #bash #linux #interview #analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech

This blog post has the top Bash Interview questions and answers that will help you prepare for the next Bash scripts Interview. You can check this Linux interview blog post for interview questions related to Linux. We have divided the interview questions into various sections so that it is easier to follow. Question: What do you understand by Bash Script? Answer: A bash script is a file…

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Data Warehouse Interview Questions

Data Warehouse Interview Questions. #sql #database #interview #query #schema #analytics #engineering #distributedcomputing #dataengineering #science #news #technology #data #trends #tech #architecture

Question: What is a Data Warehouse? Answer: A data warehouse is a repository of integrating data that are extracted from different data sources. Question: What are the different tiers in Data Warehouse architecture? Answer: The three tiers in the Data warehouse are as follows. Upper Tier Middle Tier Bottom Tier Question: What is Metadata or Data Dictionary? Answer: Metadata or Data…

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Important AWS Glue Interview Questions

AWS Glue Interview questions. #aws #glue #cloud #interview #etl #questions #triggers #science #technology #engineering #python #scala

In this blog post, we will look at some of the frequent and important questions about AWS Flue. Question: What do you understand by AWS Glue? Answer: Glue is a fully managed extract, transform, and load(ETL) service provided by Amazon Web Services(AWS) that allows the automation of discovery, preparation, and creation of business-ready datasets (BRD), machine learning, and application…