View-virtual table

In the data room charging system, many people quickly completed the process. After my investigation, I learned that many people created data tables based on their own needs. This may save a lot of time in the database design to speed up the progress, but may cause database redundancy and slow the running of your own database. However, at present, our database is relatively small.

In the data room charging system, many people quickly completed the process. After my investigation, I learned that many people created data tables based on their own needs. This may save a lot of time in the database design to speed up the progress, but may cause database redundancy and slow the running of your own database. However, at present, our database is relatively small.

In the data room charging system, many people quickly completed the process. After my investigation, I learned that many people created data tables based on their own needs. This may save a lot of time in the database design to speed up the progress, but may cause database redundancy and slow the running of your own database. However, at present, our database is relatively small, and the benefits of performance optimization may not be obvious. When watching Chen Wei's video, I learned about the role of the view and applied it to my own database design. View. To create a virtual data table, you can create and call the corresponding view as needed. There are two ways to create a view: 1. Use the code writing method. I ,. 2. Use the features inherent in SQL server to right-click and create a view. And then try to call, 3 (in blue)