What Is Database Design?

Database design refers to constructing an optimal database model for a given application environment, establishing a database and its application system so that it can efficiently store data and meet the application needs of various users (information requirements and processing Claim). In the field of databases, various systems that use databases are often collectively referred to as database application systems.

Database design (Database Design) refers to a specific

1.One-to-one design principle

In the software development process, you need to follow the one-to-one relationship design principle to carry out data maintenance. By using this principle, you can minimize the maintenance

1. Conducive to resource conservation

Many computer software designs pay too much attention to the functional modules of the computer software, but do not comprehensively and comprehensively analyze the database design. This often results in low performance and various failures in the software during actual operation. It can even cause leakage and system A series of security risks such as crashes. Therefore, paying attention to the design of computer software database can not only reduce the maintenance of the software later, achieve the goal of saving manpower and material resources, but also benefit the efficient use of software functions.

2. Conducive to the improvement of software running speed

High-level database design can meet the requirements of different computer software systems for operating speed, and can also give full play to and realize system functions. After the performance of the computer software is improved, the running instructions issued by the system will also be faster and more effective when providing information to users, and the software running speed will naturally increase. In addition, a scalable database design can help users save time in operating software [1]. In the process of database design, the use of its information storage function can improve the query efficiency of the system by clearing out some unnecessary databases. In addition to the above functions, software designers can also carry out effective database design based on software functional requirements, thereby ensuring that the database can effectively play its role in the operation of computer software.

3. Facilitates the reduction of software failures

When designing a database, some designers' design steps are too complicated, and the software itself is not effectively analyzed, which will inevitably lead to computer software being unable to effectively perform its own functions. On the other hand, the lack of effective design log information will also cause a series of failures during the operation of the software, and it will inevitably be more difficult for users to modify some wrong operations. Therefore, strengthening the database design can effectively reduce the probability of software failure and promote the realization of computer software functions. ^[2]

Clear user needs: As an important basis for computer software development, database design directly reflects user needs, so designers are designing

1. Basic business needs cannot be met

A database design that cannot fully meet the basic needs of the business will not only cause fluctuations in the data system, but will also impose greater constraints on the operation and processing of data resources because the system cannot be adjusted in time.

2, the database performance is not high

Computer software database systems have high requirements for business data. However, many databases currently have low performance. The digital form used in the design process is also unreasonable. Users are more complex when performing queries and other operations. The data The balance of application has not been fully considered.

3, the scalability of the database is poor

For a complete computer software database, its operation and adjustment cannot be separated from complete data resources. Incomplete data resources will not only cause irrational data information, but also cause problems such as poor database updates and incomplete deletion. The existence of these problems will seriously restrict the display and analysis of information resources.

4. Data resource redundancy

The problem of data resource redundancy is more common in computer software database design, and the system query speed will be greatly slowed down due to the occupation of a large number of data resource libraries. The limitation of statistical work will also have a certain impact on the design of the table system, such as the inability to achieve a reasonable combination of related fields with statistical fields. In this way, the data statistics steps in the database will be much more cumbersome, and the statistical project will not be well developed.

5, the coupling between the table is too dense

The close coupling between tables and tables is the main reason that restricts computer database design and resource statistics and analysis. Once a table changes, it will inevitably bring major changes to other tables. ^[2]