Infosys Interview Questions, Process, and Tips

Framework explanation

• A framework is a set of guidelines, libraries, and tools used to develop software applications

• It provides a structure for developers to build upon and ensures consistency in coding practices

• Frameworks can be front-end (like React or Angular) or back-end (like Spring or Django)

• They help streamline development process and improve code quality

Static call is determined at compile time while dynamic call is determined at runtime.

• Static call is resolved by the compiler based on the type of the object at compile time.

• Dynamic call is resolved by the runtime environment based on the actual type of the object at runtime.

• Static call is faster but less flexible, while dynamic call is slower but more flexible.

• Example: In Java, static method calls are resolved at comp...read more

READ reads data from a file into a variable, while READ INTO WS-VARIABLE reads data into a specified work area.

• READ is used to read data from a file into a variable in COBOL.

• READ INTO WS-VARIABLE is used to read data into a specified work area in COBOL.

• READ example: READ FILE-NAME INTO DATA-VARIABLE.

• READ INTO WS-VARIABLE example: READ FILE-NAME INTO WS-WORK-AREA.

SQL CODE -803 vs -811

• SQL CODE -803 indicates a duplicate key error, meaning a unique constraint violation.

• SQL CODE -811 indicates a result set that is not unique, meaning a select query returned multiple rows when only one was expected.

var, let, and const are different ways to declare variables in JavaScript. Single page application is a web app that loads a single HTML page and dynamically updates the content.

• var is function-scoped, let is block-scoped, and const is block-scoped and cannot be reassigned.

• Single page application (SPA) is a web application that interacts with the user by dynamically rewriting the current page rather than loading entire...read more