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ETL stands for Extract, Transform, Load. It is used to extract data from various sources, transform it into a consistent format, and load it into a data warehouse for analysis.
Extract: Data is extracted from different sources such as databases, files, or APIs.
Transform: The extracted data is cleaned, filtered, and transformed into a consistent format.
Load: The transformed data is loaded into a data warehouse for analys...
SCD types refer to slowly changing dimensions in data warehousing, used to track historical changes in data over time.
SCD Type 1: Overwrites old data with new data, losing historical information.
SCD Type 2: Keeps multiple versions of the same record, creating new records for each change.
SCD Type 3: Keeps some historical data in the same record, adding new columns for changes.
SCD Type 4: Uses separate tables to store hi...
I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
Name mangling is a technique used by compilers to give unique names to functions and variables to avoid naming conflicts.
Name mangling is used in C++ to support function overloading.
It is also used in Python to avoid naming conflicts in modules.
Name mangling can make it difficult to access variables and functions from outside the class in which they are defined.
In C++, name mangling can be seen by using the 'nm' comman
I applied via Naukri.com and was interviewed before Jul 2020. There was 1 interview round.
I applied via Naukri.com and was interviewed before Oct 2021. There were 3 interview rounds.
AD DNS DHCP are Microsoft technologies used for network management and authentication.
Active Directory (AD) is a directory service used for authentication and authorization of users and computers in a network.
Domain Name System (DNS) is used for name resolution of network resources.
Dynamic Host Configuration Protocol (DHCP) is used for automatic IP address assignment to network devices.
AD, DNS, and DHCP are often used ...
IaaS, SaaS, and PaaS are cloud computing models that provide different levels of infrastructure, software, and platform services.
IaaS (Infrastructure as a Service) provides virtualized computing resources over the internet, such as servers, storage, and networking.
SaaS (Software as a Service) delivers software applications over the internet, eliminating the need for local installation and maintenance.
PaaS (Platform as ...
General questions for 1 hors online exams
I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Nov 2020. There were 5 interview rounds.
I applied via Campus Placement and was interviewed before Apr 2020. There were 3 interview rounds.
I applied via Job Fair and was interviewed before May 2021. There were 2 interview rounds.
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