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Azure Data Lake is a cloud-based storage and analytics service, while Delta Lake is an open-source storage layer that adds reliability to data lakes.
Azure Data Lake is a service provided by Microsoft Azure for storing and analyzing large amounts of data.
Delta Lake is an open-source storage layer that adds ACID transactions and schema enforcement to data lakes.
Azure Data Lake is a cloud-based solution, while Delta Lake ...
Primary keys and foreign keys can be implemented in delta tables using constraints and references.
Primary keys can be implemented using the PRIMARY KEY constraint, which ensures that each record in the table has a unique identifier.
Foreign keys can be implemented using the FOREIGN KEY constraint, which establishes a link between two tables based on a common column.
The referenced table must have a primary key defined, a...
Exception handling in Python allows for the graceful handling of errors and prevents program crashes.
Use try-except blocks to catch and handle exceptions.
Multiple except blocks can be used to handle different types of exceptions.
The finally block is executed regardless of whether an exception occurred or not.
Exceptions can be raised using the 'raise' keyword.
Custom exceptions can be defined by creating a new class that
Star schema is a data modeling technique where a central fact table is connected to multiple dimension tables. Snowflake schema is an extension of star schema with normalized dimension tables.
Star schema is a simple and denormalized structure
It consists of a central fact table connected to multiple dimension tables
Dimension tables contain descriptive attributes
Star schema is easy to understand and query, but can lead t...
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I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
I applied via Campus Placement and was interviewed before Feb 2020. There were 6 interview rounds.
I applied via Company Website and was interviewed before Feb 2020. There was 1 interview round.
I applied via Campus Placement and was interviewed in Oct 2020. There were 4 interview rounds.
Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.
Start from the first element and compare it with the next element
If the next element is smaller, swap them
Repeat this process for all elements in the array
Continue this process until no more swaps are needed
A program to print all prime numbers
Take input from user for range of numbers
Loop through the range and check if each number is prime
Print the prime numbers
Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.
Hashmap uses a hash function to map keys to indices in an array.
Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.
Examples of hashmap implementations include Java's HashMap class and Python's dict type.
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows code reuse and promotes code organization.
The existing class is called the parent or superclass, and the new class is called the child or subclass.
The child class inherits all the properties and methods of the parent class and can also add new properties and methods.
For...
I applied via Walk-in and was interviewed in Mar 2021. There was 1 interview round.
I applied via Recruitment Consulltant and was interviewed before Apr 2021. There were 3 interview rounds.
Standard Aptitude questions
Based on strings and array
I applied via Company Website and was interviewed in Dec 2020. There was 1 interview round.
based on 1 interview
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