Droisys Interview Questions, Process, and Tips

Q1. Difference between stored procedure and functions?
Ans. 
Stored procedures are used to perform an action, while functions return a value.
• Stored procedures are precompiled and stored in the database, while functions are compiled at runtime.

• Functions can be used in SQL statements, while stored procedures cannot be used in SQL statements.

• Functions can be called from within stored procedures, but stored procedures cannot be called from within functions.

• Functions can have input p...read more
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Q2. Difference between == & === ?
Ans. 
The == operator compares values, while the === operator compares values and types.
• The == operator performs type coercion, while the === operator does not.

• The == operator returns true if the values are equal after type coercion, while the === operator returns true only if the values and types are equal.

• For example, 1 == '1' returns true, but 1 === '1' returns false.
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Smooth process of the group discussion.

Provide a problem and request a solution.

Q1. What fundamental questions related to the technologies mentioned in your resume were asked?
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Q1. Basic hr discussion
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Basic questions on about string and array data structures

Q1. Ethics , company policy
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Q2. How they regulate
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For fresher it was a normal aptitude test of Maths and English

Q1. Second round was technical related to coding common concepts like polymorphism, inheritance, class and struct etc.
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Q2. What is Polymorphism
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to represent multiple underlying data types.

• Examples include method overloading and method overriding in object-oriented programming.
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Q3. What is encapsulation
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by preventing outside code from directly accessing it.

• Encapsulation also helps in achieving data abstraction, where the internal details of an object are hidden and only the necessary in
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Q4. Interface in java
Ans. 
Interface in Java is a reference type in Java, similar to a class, that can contain only abstract methods, default methods, static methods, and constant variables.
• Interfaces are used to achieve abstraction and multiple inheritance in Java.

• All methods in an interface are public and abstract by default.

• A class can implement multiple interfaces but can only extend one class.

• Example: interface Shape { void draw(); }

• Example
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This was final round where the VP was taking GD and asking questions related to the domain you've applied, as I applied for mobile development he asked me differences key between iOS and Android, latest available versions on those OS and some general questions