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Union combines and removes duplicates, Union all combines without removing duplicates
Union combines result sets and removes duplicates
Union all combines result sets without removing duplicates
Union is slower than Union all as it involves removing duplicates
Example: SELECT column1 FROM table1 UNION SELECT column1 FROM table2;
Example: SELECT column1 FROM table1 UNION ALL SELECT column1 FROM table2;
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I applied via Recruitment Consultant and was interviewed before Sep 2018. There were 4 interview rounds.
I was interviewed in Feb 2017.
My training project involved designing and implementing a network infrastructure for a medium-sized company.
Researched and analyzed the company's requirements for network connectivity and security.
Designed a network architecture that included routers, switches, firewalls, and VPNs.
Configured and tested the network devices to ensure proper functionality.
Implemented security measures such as access control lists and intr...
Mobile apps work by running code on the device to perform specific tasks and interact with the user.
Mobile apps are developed using programming languages like Java, Swift, or Kotlin.
Apps are installed on the device and run locally, utilizing the device's resources.
They can access device features like camera, GPS, and sensors.
Apps communicate with servers or APIs to fetch data or perform actions.
User interactions trigge...
Big Data refers to large and complex sets of data that cannot be easily managed or processed using traditional methods.
Big Data is characterized by the 3Vs: Volume, Velocity, and Variety.
Volume refers to the vast amount of data generated and collected from various sources.
Velocity refers to the speed at which data is generated and needs to be processed in real-time.
Variety refers to the different types and formats of d...
SMAC stands for Social, Mobile, Analytics, and Cloud.
SMAC is a combination of four technologies that are transforming businesses and industries.
Social refers to the use of social media platforms for communication and collaboration.
Mobile refers to the use of mobile devices and applications for accessing information and services.
Analytics refers to the use of data analysis tools and techniques to gain insights and make ...
I am a system engineer with expertise in designing and maintaining complex computer systems.
Experienced in configuring and troubleshooting network devices
Proficient in scripting languages like Python and Bash
Skilled in virtualization technologies such as VMware and Hyper-V
Knowledgeable in cloud computing platforms like AWS and Azure
Familiar with ITIL best practices for service management
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Assistant Manager
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Reliance Industries
Tata Group
Adani Group
Mahindra & Mahindra