Infosys Operations Executive Interview Questions, Process, and Tips

Q1. All questions about java
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Q2. Building blocks of java
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Building blocks of Java include variables, data types, operators, control structures, and classes.
• Variables are used to store data

• Data types define the type of data that can be stored in a variable

• Operators are used to perform operations on data

• Control structures are used to control the flow of a program

• Classes are used to define objects and their behavior
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Easy to moderate level of questions

Q1. Reverse string program Array String manipulation functions
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Q2. SQL Create statement Truncate Delete Drop Difference Between delete and drop Insert statement Any questions for me?
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SQL statements and differences between them
• CREATE statement is used to create a new table or database

• TRUNCATE statement is used to delete all data from a table

• DELETE statement is used to delete specific data from a table

• DROP statement is used to delete a table or database

• DELETE only deletes data while DROP deletes the entire table

• INSERT statement is used to add new data to a table
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Test on reasoning aptitude and puzzles

Q1. Technical interview on basics in c and java
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Q2. What is inheritance? Oops concept? ......etc
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Inheritance is a concept in object-oriented programming where a new class is created by inheriting properties of an existing class.
• Inheritance allows for code reuse and promotes modularity.

• The existing class is called the parent or base class, while the new class is called the child or derived class.

• The child class can access all the public and protected members of the parent class.

• Example: A class Animal can be the pa...read more
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Easy level, game based

Q1. What is database?
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A database is a structured collection of data that is organized in a way that allows for easy access, management, and retrieval.
• Database stores data in tables, with each table consisting of rows and columns.

• It allows for efficient querying and retrieval of specific data.

• Examples of databases include MySQL, Oracle, and MongoDB.
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Q2. What are joins?
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Joins are used in databases to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column between them

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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