Optel Vision India Solution Architect Interview Questions and Answers

Data warehousing is the process of collecting, storing, and managing data from various sources for analysis and reporting.

• Data warehousing involves extracting data from multiple sources

• Data is then transformed and loaded into a central repository

• The data can be used for analysis, reporting, and decision-making

• Examples include data warehouses used by businesses to analyze sales data

I admire your company's innovative approach and commitment to impactful technology, aligning perfectly with my career goals and values.

• Your focus on cutting-edge technology, like AI and machine learning, excites me as I have experience in developing similar solutions.

• I appreciate your commitment to sustainability, which resonates with my personal values and desire to contribute to a better future.

• The collaborative cult...read more

A pointer to pointer is a variable that stores the memory address of another pointer variable.

• It is used to create dynamic data structures like linked lists and trees.

• It allows multiple levels of indirection.

• It is denoted by ** in C and C++.

• Example: int **ptr;

• Example: ptr = &p; where p is a pointer variable.

Main principles of Java include object-oriented programming, platform independence, and automatic memory management.

• Object-oriented programming: Java is based on classes and objects, allowing for encapsulation, inheritance, and polymorphism.

• Platform independence: Java code can run on any platform that has a Java Virtual Machine (JVM) installed.

• Automatic memory management: Java uses garbage collection to automatically m

The == operator compares the memory addresses of two objects, while the equals method compares the content of two objects.

• The == operator is used to compare the memory addresses of two objects in Java.

• The equals method is used to compare the content of two objects in Java.

• Example: String str1 = new String("hello"); String str2 = new String("hello"); str1 == str2 will return false, but str1.equals(str2) will return true