Trantor IOS Developer Interview Questions and Answers

The basic question is related to profit percentage, time and distance

Q1. Is the database schema of any type?
Ans. 
Yes, the database schema can be of various types such as relational, hierarchical, network, object-oriented, etc.
• Relational database schema is the most common type, using tables to store data with relationships between them.

• Hierarchical database schema organizes data in a tree-like structure.

• Network database schema allows multiple relationships between records.

• Object-oriented database schema stores data as objects with...read more
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BASIC DSA LIKE ARRAY AND STRING

Q1. System Design for Electric Charger app ?
Ans. 
System design for an electric charger app involves creating a user-friendly interface, integrating with payment systems, and ensuring efficient charging station management.
• Design a user-friendly interface for users to locate and reserve charging stations

• Integrate with payment systems for seamless transactions

• Implement efficient charging station management to monitor availability and maintenance

• Consider scalability for ...read more
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Q2. Design digram for that ?
Ans. 
Design diagram for a software developer role.
• Use UML diagrams to show class relationships and interactions

• Include components like classes, interfaces, relationships, and methods

• Consider using tools like Lucidchart or draw.io for creating the diagram
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Very basic aptitude questions along with few coding questions

Q1. A problem statement was given and we had to provide an optimal approach to design and handle that problem
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Q2. Oops concepts, SQL queries
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Arrays, basics. easy, some important topics in python and sql

Q1. SQL basics question learned in online or self
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Q2. Joins, groupby, clause, projection, having
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It was basic test. online.

2 questions on arrays. online.

The general topic. Be point to point

Q1. SQL and Python questions. online. screen sharing
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Was taken on firefox Brower and was easy

Very basic questions like swap numbers etc

Q1. Basic questions on cpp
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Q2. Opps concept like encapsulation etc
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Q3. Write a code to reverse a string
Ans. 
Code to reverse a string
• Create an empty string to store the reversed string

• Loop through the original string from end to start

• Append each character to the empty string

• Return the reversed string
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Q1. What is increment operator
Ans. 
The increment operator is used to increase the value of a variable by 1.
• The increment operator is denoted by ++.

• It can be used with both integers and floating-point numbers.

• It can be used as a prefix (++x) or postfix (x++).

• When used as a prefix, the value is incremented before the expression is evaluated.

• When used as a postfix, the value is incremented after the expression is evaluated.

• Example: int x = 5; x++; // x is
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Q2. Explain dbms and rdbms
Ans. 
DBMS is a software that manages databases, while RDBMS is a type of DBMS that uses a relational model.
• DBMS stands for Database Management System

• It is a software that allows users to create, manipulate, and manage databases

• RDBMS is a type of DBMS that organizes data into tables with rows and columns

• It enforces the relational model and supports SQL for querying and managing data

• Examples of DBMS: MySQL, Oracle, SQL Server
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