Doyen Systems Oracle Database Administrator Interview Questions and Answers

Q1. OOP questions SQL Questions Programming structure
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Q1. SQL questions MVC and C# related questions
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Q1. What is data warehousing
Ans. 
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
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Q1. Why do you want to join this company
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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
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Q2. Tell me about yourself
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Aptitude, reasoning,java MCQS

Q1. Technical round
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Q1. Second technical round
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Q1. HR and package discussion
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Full c concept MCQ with IQ and Computaional Thinking

Q1. Number system convertion in c
Ans. 
Number system conversion in C involves converting numbers between different bases, such as decimal to binary or hexadecimal.
• Use functions like itoa() to convert integers to strings in different bases

• Use strtol() to convert strings to integers in different bases

• Remember to specify the base when converting numbers
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Q2. Pointers, struct, Data Structure
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Q1. Decimal to Binary Convertion
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Q2. Hexa Decimal to Binary convertion
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Q1. Delegate, serialization, deserialization,
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Q2. Sdlc, aglie, waterfall metthod
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Q3. Simple query, string reversal coding
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Q1. What are the main principles of the Java
Ans. 
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
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Q2. What is the different between == and equals method
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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
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