Outline design, detailed design (c) key points (know-how), application skills

1. Key points (know-how ), the use of skills4.1Design Guidelines

Design guidelines are the most important and critical work in the design phase. Often overlooked in practical work, most projects are sacrificed at this stage. Design guidelines focus on how to better design, design guidelines are usually to consider the content of: design content, methods, tools, templates, naming conventions, module partitioning rules (especially design granularity), quality and efficiency evaluation methods and so on. We must first determine the design content based on the needs of the system, customer capabilities, the characteristics of the project (cost, scale, schedule, quality) and its own experience. For software outsourcing engineering projects, especially some international outsourcing projects, design guidelines are generally established, and our design team only needs to learn, understand, produce and meet these requirements. In other cases, we need to define rules for one item and agree with our clients. In fact, in some ways, the design criteria represent the design capability.

1. Definition of design content

Identify and define the content of the summary design, detailed design, in defining the design content needs to consider the cost, quality, progress, team capabilities and other factors, but also to take into account the requirements of the testing phase.

Example: the design content of general website system

Overview design	Summary Design Book	1 copies	System Architecture Design
			Physical architecture
			Software architecture & software hierarchy design
			subsystem (contains common part \package named)
			Overall design of the interface
	Overview Design -with XXX interface design book	Some	Sub-interface design with various products
	Overview Design -Website Structure design book	1 copies	Site structure Design (directory structure partition \ Include deployment design )
	Overview Design -database design book	1 copies	Database physical /Logical Design
	Overview design -Data dictionary book	1 copies	Data dictionary
Detailed design	Picture List	1 copies	List of all display screens
	Joint design	1 copies	All program level co-design (total merge one): Log \log\ message \session\ permissions \ macro definition \ database procedures \ Screen components \ Special functions \ Business Common
	Hint Information design	1 copies	Log \log\ External messages all the external information is always concentrated together.
	Configuration design	1 copies	All kinds of configuration items overall lead cable
	Detailed design	1 copies	Universal rule design, most features unified design
	Detailed Design-xx function	Some	Complex functions, individually designed. About 30%~50%

Example: Monitoring class system Design content

Number	Outline design Content				Describe
1	Business aspects	Business	General outline design of the substation business layer	1 copies
2			Overview design of Substation Business Layer Station terminal	1 copies
			.....
5			"Screen Design List"	1 copies
6			Demo of the screen	Several of the
7		Service	"Data Interchange standard for substation service layer"	Total 1 copies
8			Overview design of Substation service layer	Total 1 (can also be divided by service)
10		signal	"Full signal list"	1 this	Signal Standard classification /number /device information standard -communication standard -Alert standard -processing Standard -performance requirements table
11			"Information standard of substation intelligent equipment"	Several of the	Sub -devices, signal format specification
			....
16			"Version Import Signal list"	1 copies	Management with
17		Data	"Database Logic Design book"	1 (according to the station /city /Province of the better)	Logical design of database tables and fields
			....
21st			"System Configuration Information Specification"	Total 1 copies	Content is a description of various configurations
22		Interface	"MIS interface design book"	1 copies
			....
26	Technical aspects		The design Manual of substation Auxiliary Monitoring architecture	1 copies
27			The key technology investigation case	Some
	Detailed design Content
1	Business aspects		"Graphic Design"	Several of the
2			"Report Design"	Several of the
3			Detailed design of the service layer	Several of the	Design based on service (state management /control management /ADP)
4	Technical aspects		Detailed design of the screen layer	1 copies	Image engine /structure prototype design
5			Detailed design of the service layer	1 copies	Service engine /structure prototype design
6			"System common Design"	1 copies
7			"Business Common Design"	1 copies
8			Assisted development /testing Tools	Several of the	Management , auxiliary efficiency development use

2. Design methods and tools

Design tools are considered based on the content of the design and the requirements. For example , using Erwin for DB design,Visio for process design, and so on. In addition, some design tools must be trained by the design team for effective use.

3. Create a design template

The design of the book into a corresponding template, the format, content, legend, text and other specific requirements to make the team more effective work. In some cases, we will design a 1-4-level catalogue will be detailed to ensure that the design is more effective.

Example Data template

Note: For templates such as Excel, you can make some macros or tools that are easier to retrieve, modify, and so on. In addition, the use of wikis and other systems to improve the management of design materials.

4. Naming conventions, module partitioning rules

Naming conventions can contain a lot of content, such as the naming of design documents, naming rules for various terms, numbering rules, and so on. It is a good habit to make a proper number for anything, and of course some people think it's an occupational disease. When the design material dozens of, hundred grams, when a designer needs and different levels of personnel, such as customers, users, business experts, managers, developers, testers and so on to communicate, and sometimes have to communicate in various languages, anyone would like to have a complete naming protocol.

2. Quality and efficiency assessment methods

Set the goal of quality and efficiency

4.2Design Review

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4.3Change Management

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4.4Team Organization

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Outline design, detailed design (c) key points (know-how), application skills