Types of joins in SQL

SQL join is an instruction to a database to combine data from more than one table. There are different kinds of joins, which have different rules for the results they create. In most SQL implementations you may find such joins as inner join, left join, right join, full join and also language implementation specific ones.

What is ADO.NET?

ADO.NET is a feature of Microsoft .NET Framework that you can use to access and manipulate data. It is a part of the base class library that is included with the .NET Framework. It is commonly used by programmers to access and modify data stored in relational database systems, though it can also access data in non-relational sources.

What is encapsulation in OOP?

Encapsulation is one of the four fundamental OOP concepts. It is the inclusion within a program object of all the resources needed for the object to properly function on its own - basically, the methods and the data. The object has its public interface and other objects adhere to these interface to use the object without having to be concerned with how the object internally implements it. The idea is "don't tell me how you do it; just do it".

What is CSS?

Cascading Style Sheets (CSS) is a style sheet language used to set the visual style of web pages. Usually, it is describing the presentation of a document written in HTML, although it can be used to set styles of document written in any markup language (e.g. XML). Along with JavaScript and HTML, CSS is a cornerstone technology, used to create visually engaging, dynamic web pages and user interfaces for web applications.

What is SQL?

SQL stands for Structured Query Language. Basically, SQL is used to communicate with and manipulate a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems. The scope of SQL includes data insert, query, update and delete, schema creation and modification, and data access control.

What is JavaScript?

JavaScript is one of the three pillars of modern web development along with HTML and CSS. The majority of websites employ it and it is supported by all modern web browsers. It is a high-level, multi-paradigm, dynamic, untyped, object-oriented (prototype-based), imperative and interpreted programming language.