In a modern business environment, databases are an important tool for enterprises to store core data, and MySQL, as the most popular relational database management system, is widely used in various industries. In scenarios such as disaster recovery, data migration, and backup recovery, in order to ensure data consistency between two or more ends, it is usually necessary to compare data consistency.

The traditional method of data comparison " manual sampling " usually requires a series of cumbersome procedures, including exporting data sets, comparing data sets, writing SQL and modifying inconsistencies, etc. It’s okay to say that the amount of data is not large. In the case of a large amount of data and a complex database structure, it may cause serious business failures. For example, enterprises have migrated a large number of order data, but manual random inspections did not find inconsistent results. The abnormality of customer order information is caused, which is fatal to the company's brand and credit impact. Therefore, the automation of data comparison is the general trend.

1. Insufficient data comparison tools on the market

Performance issues: Most of the tools are based on local computer resources for data comparison, and there are problems such as inability to handle large amounts of data comparison, and slow comparison speed.
Functional limitations: Only specific types of data sources are supported, which cannot meet all the needs of users.
Operating system compatibility: The support for mainstream operating systems is not comprehensive, which makes it difficult for users to use.
Expensive: Some commercial tools provide better performance and user experience, but are often expensive and not suitable for small and micro enterprises.

2. Advantages of NineData database comparison

The NineData database comparison function is a tool for comparing differences between databases. It is used to compare the differences in data and structures between two databases, helping you track database changes, find problems and quickly fix them. Portal: https://www.ninedata.cloud/compare

Compared with other data comparison tools, NineData database comparison has the following advantages:

Out-of-the-box: The SaaS platform provides services without installation, does not depend on a specific operating system, does not need to install software locally, and greatly reduces the occupation of local storage resources.
Powerful performance: Based on a large server cluster, it supports the comparison of more than 1 TB of data, and the comparison data volume of hundreds of megabytes per second.
Comprehensive data source support: supports multiple data sources such as MySQL, SQL Server, PostgreSQL, ClickHouse, Doris, SelectDB, and Redis.
Perfect comparison function: supports database table structure and data consistency comparison, and provides comparison functions suitable for various usage scenarios, such as one-time comparison, periodic comparison, and quick comparison.
Fast and efficient: Adopting advanced algorithms and technologies, it can quickly handle large-scale and complex data comparison tasks, greatly shortening the comparison time.
Visual interface: With a simple and intuitive user interface, data comparison can be performed without complicated settings, and the comparison results are presented in intuitive charts and reports, allowing you to easily understand data differences.
One-click difference repair: Automatically generate repair SQL for inconsistent content, and complete the repair of inconsistent data through simple copy and paste, saving a lot of time and energy.
Free to use: Compared with expensive commercial tools, NineData's structure comparison and data comparison functions are free to use and are suitable for enterprises and individuals of different sizes.
Safe and reliable: The NineData platform has passed the third-level network security level protection certification of the Ministry of Public Security, providing high-level protection for enterprise information security.