DDF Consultants Assistant Engineer - Civil Interview Questions and Answers

Q1. As it was WFH, they checked for internet connection and location.
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Q1. Most questions on e/n and coding updates and changes . MDM table
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Q1. Dotnet, angular , azure
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Q1. Questions related to NODEJS , PHP, Past projects, Resume
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Q2. Why Mongodb over Sql
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MongoDB is preferred over SQL for its flexibility, scalability, and ease of use in handling unstructured data.
• MongoDB is a NoSQL database, making it easier to work with unstructured data compared to SQL.

• MongoDB is schema-less, allowing for more flexibility in data modeling and changes.

• MongoDB is horizontally scalable, making it easier to handle large amounts of data and high traffic loads.

• MongoDB's document-based data ...read more
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C,c++ questions and two coding questions. basic mcq

Q1. Treeset, hashset difference
Ans. 
TreeSet and HashSet are both implementations of the Set interface in Java, but they have some key differences.
• TreeSet is a sorted set that maintains elements in ascending order, while HashSet does not guarantee any specific order.

• TreeSet uses a Red-Black tree data structure for storage, which allows for efficient retrieval of elements in sorted order.

• HashSet uses a hash table for storage, which provides constant-time p...read more
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Q2. Oops concept, dbms, programming questions
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Q3. Set and treeset and hashset
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Q1. How to work on medicare/medicaid?
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Q1. 1. Basic query questions was asked including concepts such as row number logic, update, delete etc. 2. What is materialized view in snowflake?
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Q2. 1. What is database and schema in sql? 2. What is integration runtime in Azure Data Factory?
Ans. 
1. Database is a collection of organized data, schema defines the structure of the database. 2. Integration Runtime in Azure Data Factory is a compute infrastructure used to move data.
• Database is a collection of tables, indexes, views, and other objects that store and organize data.

• Schema defines the structure of the database, including tables, columns, relationships, and constraints.

• Integration Runtime in Azure Data F...read more
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Simple and easy basic aptitude

Simple question solved in python

Q1. Program to print Prime number
Ans. 
Program to print Prime number
• Iterate through numbers and check if each number is prime

• Use a nested loop to check for factors of the number

• A prime number is a number that is only divisible by 1 and itself
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Q2. Program to compute permutations and combinations
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Program to compute permutations and combinations
• Use recursion to generate all possible permutations and combinations

• For permutations, swap elements in the array and recursively call the function

• For combinations, include or exclude elements in the array and recursively call the function

• Use a loop to iterate through the array and generate all possible permutations and combinations
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Q3. Program to find the missing element in a series of number
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Program to find the missing element in a series of numbers
• Iterate through the array and calculate the sum of all elements

• Calculate the sum of the series using the formula n*(n+1)/2 where n is the length of the series

• Subtract the sum of the array from the sum of the series to find the missing element
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