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RTSALL Latest Questions

Queryiest
QueryiestEnlightened
Asked: July 25, 2023In: Programs

Perform CRUD operation in java using mvc pattern.

In Java, performing CRUD (Create, Read, Update, Delete) operations in an MVC (Model-View-Controller) architecture typically involves creating separate components for each operation. Below are the keywords and titles associated with each operation:Create (C):Keyword: INSERT, CREATE Title: Create a new record or ...Read more

javajava mvc crudmvc
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Queryiest
QueryiestEnlightened
Asked: February 24, 2023In: Programs

What is a view in SQL?

A view is a virtual table that is created based on the result of a query. It allows users to see a subset of the data in a table without actually modifying the data. Before understanding a view, it ...Read more

sql
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Queryiest
QueryiestEnlightened
Asked: March 14, 2023In: Programs

How do I rename a local Git branch step by step solution?

Renaming a local Git branch is a common task in version control. You can safely rename your current branch or a different local branch using a few simple commands. This guide provides a step-by-step solution to ensure your local ...Read more

gitgit branchversion-control
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Queryiest
QueryiestEnlightened
Asked: July 28, 2023In: Programs

Why is processing a sorted array faster than processing an unsorted array? In this C++

Processing a sorted array faster than an unsorted array is a very common observation in C++, and it often surprises beginners. Many students ask:“If both arrays have the same elements, why does sorting make the ...Read more

java
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Queryiest
QueryiestEnlightened
Asked: February 24, 2023In: Programs

What is a subquery?

A subquery is a query that is nested inside another query. It is used to retrieve data that will be used in the main query. When students first learn SQL, they often write simple queries that ask the database ...Read more

sql
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Queryiest
QueryiestEnlightened
Asked: March 14, 2023In: Programs

How do I undo ‘git add’ before commit?

If you accidentally added a file or files using git add that you didn’t intend to include in your commit, you can undo the add operation by using the following command: git reset <file> Replace <file> with the name of the file ...Read more

gitgit-addundo
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Queryiest
QueryiestEnlightened
Asked: March 2, 2023In: Programs

What is a stored procedure?

A stored procedure is a set of SQL statements that are stored in the database and can be executed by calling the procedure. It is used to perform a specific task or set of tasks. When students first start ...Read more

sql
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Queryiest
QueryiestEnlightened
Asked: March 14, 2023In: Programs

Define is the “–>” operator in C++?

The “–>” operator in C++ is called the “member access through pointer” operator. It is used to access a member of an object that is pointed to by a pointer. The “->” operator is used when we have a pointer to ...Read more

c++code-formattingoperators
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Queryiest
QueryiestEnlightened
Asked: March 2, 2023In: Programs

What is a trigger?

Details about the trigger.When we work with databases, certain actions—like inserting, updating, or deleting data—often need an automatic response.For example, if a new student is added, maybe we also want to update the total count.Or if an employee’s salary ...Read more

sql
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Queryiest
QueryiestEnlightened
Asked: March 14, 2023In: Programs

Is it possible to use comments in JSON?

No, JSON does not support comments. According to the official JSON specification, comments are not allowed in JSON files. Any comments included in a JSON file will result in a syntax error when the file is parsed. However, you can ...Read more

commentsjson
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