May 31, 2021 Article blog
What is a database? W hy use a database? W hat can a database do? When the white people began to contact the database when these three questions are undoubtedly the first to bother the small whites, the editor-in-chief next around these three questions for everyone to explain.
When an application needs to save a user's data, such as Excel, it needs to save the data that the user edits so that it can be edited next time or copied to another computer.
The easiest way to save user data is to write it to a file. F or example, to save information for all students in a class, you can write its data information to . In the CSV file:
1. id,name,gender,score
2. 1, Tenli, M, 81
3. 2, Monu, M, 59
4. 3, 嫦娥, f, 90
5. 4, Xi Shi, F, 100
If you need to save information for all classes in your school, you can write it to another . CSV file.
But as applications become more complex and large amounts of data are being generated, how can data be stored, retrieved, and managed securely and efficiently? As a result, effective storage, access, convenient data sharing and security control has become a very important issue in today's big data era.
Using databases enables efficient and orderly storage of data, enabling people to manage data faster and more easily, mainly in the following areas:
As a result, databases have emerged as software that specializes in managing data. Since then, applications have not had to manage their own data, but have read and written data through the interfaces provided by the database software, which greatly weakens the able reading and writing of data when developers write applications.
Finally, in front of the screen you have an answer to the three questions: What is a database, why use it, and what can a database do?
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