CCTech Senior Software Engineer Interview Questions and Answers

Q1. Oops concept ,Interface ,wrapper class,
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Q2. Coding Round
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String related questions

Q1. What is ETL, and can you explain it in a structured manner?
Ans. 
ETL stands for Extract, Transform, Load. It is a process used to extract data from various sources, transform it into a consistent format, and load it into a target database or data warehouse.
• Extract: Involves extracting data from different sources such as databases, files, APIs, etc.

• Transform: Data is cleaned, validated, and transformed into a consistent format suitable for analysis.

• Load: The transformed data is loade...read more
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Q2. What is the correct structure of a DBMS diagram?
Ans. 
The correct structure of a DBMS diagram includes entities, attributes, relationships, and keys.
• Entities represent the main objects in the database (e.g. Customer, Product).

• Attributes are characteristics of entities (e.g. CustomerID, ProductName).

• Relationships show how entities are related to each other (e.g. one-to-many, many-to-many).

• Keys uniquely identify each record in a table (e.g. Primary Key, Foreign Key).
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Q1. Strengths,weakness,why do we hire you, what are your hobbies
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Q1. Find the middle element whose left and right sum is equal
Ans. 
Iterate through array to find middle element with equal left and right sum
• Iterate through array and calculate sum of elements on left and right of each element

• Return element if left sum equals right sum

• Handle edge cases like array with less than 3 elements
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Q1. Basic oops concept
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It was a DSA based coding test with 3 questions on array ( sorting, binary search and two pointers)

Q1. OOPS, DBMS WAS ASKED
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Basic coding questions that are available with just one google search

Q1. Oops concept ,Interface ,wrapper class,
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Q2. Coding Round
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String related questions

Basic questions on maths related parts and analysis skills

Coding questions from various Data Structure parts like linkedList stack queue