Find Interview Questions for Ellicium solutions inc.

Right Answer:
Examples of analytical functions in SQL Server include:

1. ROW_NUMBER()
2. RANK()
3. DENSE_RANK()
4. NTILE()
5. SUM() OVER()
6. AVG() OVER()
7. COUNT() OVER()

Right Answer:
The SQL Insert Statement is used to add new rows of data to a table in a database. The basic syntax is:

```sql
INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);
```

Right Answer:

One of the most difficult technical challenges I encountered was when a web application built on ASP.NET was experiencing severe performance issues due to slow database queries in SQL Server. To resolve this, I first used SQL Server Profiler to identify the slow queries. After analyzing the execution plans, I discovered that missing indexes were causing the delays. I then created the necessary indexes and optimized the queries. Additionally, I implemented caching strategies to reduce database load. As a result, the application's performance improved significantly, leading to faster response times and a better user experience.

Right Answer:
The SQL DELETE statement is used to remove one or more rows from a table based on a specified condition. The basic syntax is:

```sql
DELETE FROM table_name WHERE condition;
```

If no condition is specified, all rows in the table will be deleted.

Right Answer:
The box model in CSS describes the rectangular boxes generated for elements in a document tree and consists of four areas: content, padding, border, and margin. The content is the innermost area, surrounded by padding, then the border, and finally the margin, which is the outermost area.

Right Answer:
AJAX (Asynchronous JavaScript and XML) is a web development technique that allows web pages to communicate with a server and update content asynchronously without reloading the entire page. It works by using JavaScript to send requests to the server, which can return data (often in JSON or XML format) that the browser can then use to update the webpage dynamically.

Right Answer:
A Single Page Application (SPA) is a web application that loads a single HTML page and dynamically updates the content as the user interacts with the app, without requiring a full page reload.

Right Answer:
JavaScript closures are functions that remember their outer scope even when the function is executed outside that scope. They work by capturing the variables from their surrounding environment, allowing access to those variables even after the outer function has finished executing. This is useful for data encapsulation and maintaining state in asynchronous programming.

Right Answer:
The DOM (Document Object Model) is a programming interface for web documents that represents the structure of a webpage as a tree of objects. You can manipulate the DOM using JavaScript by selecting elements (e.g., using `document.getElementById`, `document.querySelector`), modifying their properties (e.g., `element.innerHTML`, `element.style`), adding or removing elements (e.g., `element.appendChild`, `element.remove`), and responding to events (e.g., `element.addEventListener`).