solid design principles c#

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Normalization-Database design principles

Summary IBM provides the community with the DB2 free version of DB2 Express-c, which provides the same core data features as DB2 Express Edition, laying a solid foundation for building and deploying applications. Relational database is a widely used database type, relational database design is the process of organizing and structuring data, and the core problem i

Java Design Patterns-six principles of design patterns

The so-called No recruit wins a recruit, practice a kung fu divides into internal strength and drilling. Drilling is like the moves, is the so-called 23 kinds of design patterns. But the internal strength, is the heart, that is the 6 kinds of laws. The light will drilling that is the huaquanxiutui, the internal strength is the realm. So many design patterns, after learning 2 times, 3 times may also forget t

API Design Principles

Original link: API Design principles–qt WikiBased on Gary's influence on Gary Gao's translation: API design guidance for C + + QT's design level is well-known in the industry, consistent, easy to master and powerful API is one of QT's most famous advantages. This article i

10 Design principles for Java

1.DRY (Don't repeat yourself)This means not writing duplicate code, instead of using abstract commonalities. If you use hard-coded more than once, consider exposing it as a final-modified invariant, and if you have the same block of code in more than two places, consider making it a separate method. The benefits of solid design principles are in maintenance. It i

Three basic features of object-oriented and five design principles

) relationship, which indicates that class B is affected if Class A is modified. Two or five principles of design "The Five Principles of object-oriented design" and the role of the principle of benign dependence in coping with change. Single Responsibility principle (Single-resposibility Principle). "There should be

Microsoft nlayerapp case theory and practice-multi-layer architecture and Application System Design Principles

effective to evaluate the specific practices, because this approach may damage the system performance. Basic Design Principles of application systems-Solid The application system design should follow some basic design principles

Database design Principles (excerpt)

software, the way to improve the operation efficiency of the database system is:(1) in the database physical design, reduce the paradigm, increase redundancy, less use of triggers, multi-use stored procedures.(2) When the calculation is very complex, and the number of records is very large (for example, 10 million), the complex calculation is first outside the database, the file system sideAfter the processing of the

[Zen Reading Notes of design patterns] 005 _ six principles of design patterns (5): The dimit Principle

? In fact, you don't have to worry about where to put it. The dimit rule gives us a solution: If a method is put in this class, that is, the relationship between classes is not added, and there is no negative impact on this class, it is placed in the class. 4. Attention to the dimit rule (iii) -- use serialization with caution Serialization is used to sequence object memory data so that it can be transmitted through different media. However, if our software system model is

Database design principles (reproduced)

system sideAfter the processing of the C + + language is completed, the final storage is appended to the table. This is the experience of telecom billing system design. (3) If a table is found to have too many records, such as more than 10 million, the table is split horizontally. The horizontal split is done with the table primary key A value of PK is a line dividing the table's records horizontally into

Seven Principles of Object-Oriented Design

In the previous article, we talked about the design patterns. Next, let's talk about some of the principles we often follow in object-oriented design. These principles are the result of numerous previous experiences. Only by following these principles can you involve excelle

Detailed description of Design Pattern principles

This articleArticleYou don't need to understand it once. If you can understand it all at once, I think the design mode is no longer difficult for you .. because the design pattern is to embody these principles, you can regard the design principle as a language, and the design

Database design Principles

sideAfter the processing of the C + + language is completed, the final storage is appended to the table. This is the experience of telecom billing system design.(3) If a table is found to have too many records, such as more than 10 million, the table is split horizontally. The horizontal split is done with the table primary keyA value of PK is a line dividing the table's records horizontally into two table

Database design principles (reproduced)

system sideAfter the processing of the C + + language is completed, the final storage is appended to the table. This is the experience of telecom billing system design.(3) If a table is found to have too many records, such as more than 10 million, the table is split horizontally. The horizontal split is done with the table primary keyA value of PK is a line dividing the table's records horizontally into tw

Database design principles (reproduced)

sideAfter the processing of the C + + language is completed, the final storage is appended to the table. This is the experience of telecom billing system design.(3) If a table is found to have too many records, such as more than 10 million, the table is split horizontally. The horizontal split is done with the table primary keyA value of PK is a line dividing the table's records horizontally into two table

10 classic object-oriented design principles

The object-oriented design principle is the core of OOPS (object-oriented programming system, Object-Oriented Programming System) programming. However, most Java programmers pursue design patterns such as Singleton, decorator, and observer, instead of focusing on Object-Oriented Analysis and Design. Even experienced Java programmers have never heard of OOPS and

java--Seven design principles of object oriented

functional interfacesIf a class implements multiple interfaces, which interface type should the class declare? You should inherit multiple interfaces with an abstract class, and implement the class to inherit the interface. When declaring, the type is an abstract class.(c) Minimum knowledge principles and the two extremes of intermediary floodingThis is another kind of

OO design principles-the LSP-Richter replacement principle of Liskov substitution principle:oo design

guarantee for the code to conform to the open and closed principles. At the same time LSP embodies: ◇ Class Inheritance principle: If an object of an inheriting class might run wrong where the base class appears, The subclass should not inherit from the base class, or it should redesign the relationship between them. ◇ Action Correctness Guarantee: From the other side, the extension of the class that accords with the LSP

11 principles of object-oriented design

11 principles of object-oriented design Single Duty principle (the Responsibility Principle , abbreviation SRP ) Open-Close principle (the Open-close Principle , abbreviated as OCP ) Liskov Replacement principle (the Liskov Substitution , hereinafter referred to as LSP ) Dependency Inversion principle (the Dependency inversion Principle , referred to as Dip ) Interface Isolation principle (the I

Design and review of embedded system hardware principles

The following are some of my experiences and feelings based on my experience in circuit design and Debugging Over the past 10 years. Let's just call it "circuit schematic design review specifications, the excerpt is for your reference only.1) understand the design requirements in detail and clarify the functional modules and performance indicators of the circuit

Seven Principles of object-oriented design and seven

Seven Principles of object-oriented design and seven Today we will talk about seven principles, namely: single responsibility, Lishi replacement, dimit law, dependency reversal, interface isolation, synthesis/aggregation principle, and openness-closure. 1. Open and Close principles(Open-Closed Principle, OCP) Definitio

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