Technoarch Softwares Interview Questions and Answers

AWS S3 is a cloud storage service provided by Amazon Web Services for storing and retrieving data.

• Used for storing and retrieving data in the cloud

• Highly scalable and secure

• Can be used for hosting static websites

• Commonly used for backup and archiving

• Offers various storage classes like Standard, Infrequent Access, and Glacier

MVC stands for Model-View-Controller, a software design pattern for separating concerns in an application.

• Model represents the data and business logic of the application.

• View is responsible for displaying the data to the user.

• Controller acts as an intermediary between Model and View, handling user input and updating the Model.

• MVC helps in organizing code, improving maintainability, and promoting reusability.

• Example: In a web application, the Model could be a database, the Vie...read more

Delete removes rows one by one, while truncate removes all rows at once.

• Delete is a DML command, while truncate is a DDL command.

• Delete operation can be rolled back, while truncate operation cannot be rolled back.

• Delete operation fires triggers, while truncate operation does not fire triggers.

• Delete operation is slower as it logs individual row deletions, while truncate operation is faster as it logs the deallocation of the data pages.

• Example: DELETE FROM table_name WHERE con...read more

ORM stands for Object-Relational Mapping, a programming technique for converting data between incompatible type systems in object-oriented programming languages.

• ORM is used to map objects from an application to tables in a relational database.

• It allows developers to work with objects instead of database tables, making it easier to interact with databases.

• ORM frameworks like Hibernate, Entity Framework, and Sequelize provide tools to automate the mapping process.

• ORM helps in r...read more

A model is a representation of a system or process used to analyze, predict, or control outcomes.

• A model can be a mathematical equation, diagram, simulation, or physical replica.

• Models are used in various fields such as engineering, economics, and computer science.

• Examples include a regression model in statistics, a circuit model in electrical engineering, and a 3D model in computer graphics.

A string is a sequence of characters used to represent text.

• Types of strings include alphanumeric strings, numeric strings, and special character strings.

• Examples of strings include 'hello world', '12345', and '@#$%^'.

An array is a data structure that stores a collection of elements of the same type in a contiguous memory location.

• Arrays are used to store multiple values in a single variable.

• Elements in an array are accessed by their index position.

• Examples of arrays of strings: ['apple', 'banana', 'orange'], ['red', 'green', 'blue'].