Database management systems typically provide authorization functionality to control what

Database management systems usually provide authorization functions to control the permissions of different users to access data, mainly to achieve database security. Protection technologies for database security include: database encryption (core data storage encryption), database firewall (anti-vulnerability, anti-attack), data desensitization (anonymization of sensitive data), etc.

The operating environment of this tutorial: Windows 7 system, mysql version 5.8, Dell G3 computer.

In the Web environment, database security is particularly important. The guarantee of database security is the shield for network website security. In order to achieve database security, the commonly used method is that the database management system provides authorization functions to control the permissions of different users to access data.

Some methods to ensure the security of the database

1. User security management

The first thing to ensure is the permissions of the database user To improve the security, users must undergo identity authentication when accessing the database. For non-supervisory users, limited permissions and dedicated passwords must be set.

2. Define views

Define different views for different users, which can limit the user's access scope. Through the view mechanism, data that needs to be kept confidential is hidden from users who do not have the right to access the data, which can provide a certain degree of security protection for the database.

3. Data encryption

Data security risks are everywhere, so data encryption is an effective measure to protect database security.

Data encryption is the most widely used, cheapest and relatively most reliable method. Data encryption is an effective means to protect data from being stolen or modified during storage and transmission.

4. Start transaction management and fault recovery

Transaction management and fault recovery are mainly to deal with natural factor failures that occur in the system and ensure the consistency and integrity of data and transactions.

The main measures for failure recovery are log recording and data replication; the results of each step of transaction operation are recorded in the system log file, and important data is copied. When a failure occurs, the data copy is accurately used based on the log file Complete transaction recovery.

5. Database backup and recovery

The database system must take necessary measures to ensure that the database can be restored when a failure occurs.

Data backup needs to be planned carefully, and a strategy must be developed and tested before being implemented. The backup plan also needs to be continuously adjusted.

6. Audit tracking mechanism

The audit tracking mechanism refers to the system setting up corresponding log records, especially the records of data updates, deletions, and modifications, so as to facilitate future verification and ensure the security of the system.

7. Strengthen server security

In the three-tier architecture of the Web database, data is stored in the database server, and most transaction processing and business logic processing are performed in the application server. The server makes a request for an operation on the database.

Therefore, strengthening the security of the database is the most effective protection.

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