What are the four stages of database design?
Understand which four stages of database design can be divided into? This problem may be often seen in our daily study or work. I hope you can gain a lot from this question. The following is the reference content that the editor brings to you, let's take a look at it!
Database design is generally divided into four stages: requirement analysis, structure design, database implementation, database operation and maintenance. Structural design includes conceptual design, logical design and physical design. The main task and goal of database implementation is to establish a database application system in the actual computer system.
Database design generally consists of the following phases:
1. Demand analysis
Understand the user's system requirements and solve the problem of "what to do".
2. Structural design
It includes conceptual design, logical design and physical design.
The goal of conceptual design is to produce the overall conceptual structure of the database that reflects the information needs of all users; the task of database logical design is to transform the Emurr diagram generated in the conceptual design phase into an organizational layer data model supported by specific DBMS, that is, to transform it into a database logical structure that DBMS can deal with; the task and goal of physical design is to select a physical structure for the logical data model that is most suitable for the application environment.
3. Database implementation
The main task and goal is to establish a database application system in the actual computer system.
4. Database operation and maintenance phase.
The main work includes: database backup and recovery, database security and integrity control, monitoring, analysis, database performance adjustment, database reorganization.
Thank you for reading! After reading the above, do you have a general understanding of the four stages of database design? I hope the content of the article will be helpful to all of you. If you want to know more about the relevant articles, you are welcome to follow the industry information channel.
