**1. What is a software design pattern? What are the three categories we have in the design pattern?**A software design pattern is a general, reusable solution to a commonly occurring problem within a given context in software design. Design patterns are best practices that the programmer can use to solve common problems when designing an application or system.There are three main categories of design patterns:1. **Creational Patterns**: These patterns deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. Examples include Singleton, Factory Method, and Abstract Factory.2. **Structural Patterns**: These patterns focus on composing classes or objects to form larger structures. Examples include Adapter, Composite, and Proxy.3. **Behavioral Patterns**: These patterns are concerned with algorithms and the assignment of responsibilities between objects. Examples include Strategy, Observer, and Command.

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What is software design pattern? What are the three categories we have in the design pattern?

Database System Concepts

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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

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Concept explainers

Design of user interface

The complete process of designing the user interfaces in software or the various digital devices with an emphasis on the appearance or style is known as user interface (UI) design. The User interface (UI) design is defined as the technique that is used by the designers to produce visually pleasant software or digital device interfaces. The designers just strive to design user interfaces that are simple to use and are enjoyable to use. Graphic user interfaces and other sorts of user interfaces, such as voice-controlled interfaces, are referred to as UI design. The user interface design anticipates what users will do and incorporates elements that make those actions easy to access, understand, and utilize. The user interface includes interaction design, visual design, and information arrangement.

Question

**1. What is a software design pattern? What are the three categories we have in the design pattern?**

A software design pattern is a general, reusable solution to a commonly occurring problem within a given context in software design. Design patterns are best practices that the programmer can use to solve common problems when designing an application or system.

There are three main categories of design patterns:

1. **Creational Patterns**: These patterns deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. Examples include Singleton, Factory Method, and Abstract Factory.

2. **Structural Patterns**: These patterns focus on composing classes or objects to form larger structures. Examples include Adapter, Composite, and Proxy.

3. **Behavioral Patterns**: These patterns are concerned with algorithms and the assignment of responsibilities between objects. Examples include Strategy, Observer, and Command.

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