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Mysql 5.7
MySQL 5.7 database reviews is a popular version of the MySQL database management system. It was released by Oracle Corporation in October 2015.
Here are some key features and information about MySQL 5.7:
- Performance Improvements: MySQL 5.7 introduced several performance enhancements, including improved query optimizer, better multi-threading support, increased scalability, and reduced overhead for certain operations.
- JSON Support: MySQL 5.7 added native support for JSON data type, allowing storage, indexing, and querying of JSON documents. It introduced a set of functions and operators to work with JSON data, making it easier to integrate JSON documents into MySQL applications.
- Secure Password Authentication: MySQL 5.7 introduced a more secure password hashing algorithm, called SHA-256, for improved password security. It also introduced password expiration policies and password strength checking mechanisms.
- InnoDB Improvements: InnoDB is the default storage engine in MySQL, and MySQL 5.7 brought several enhancements to InnoDB, including better scalability, faster crash recovery, and support for spatial indexes.
- GIS Enhancements: MySQL 5.7 improved its support for Geographic Information System (GIS) data, with new spatial functions and indexing capabilities. This allowed for efficient storage and querying of spatial data, such as maps and coordinates.
- Online ALTER TABLE: MySQL 5.7 introduced support for online schema changes using the ALTER TABLE statement. This means that you can modify the structure of a table without locking it, allowing concurrent read and write operations during the alteration.
- Improved Replication: MySQL 5.7 brought enhancements to the replication feature, making it more reliable and flexible. It introduced features like multi-source replication, improved semi-synchronous replication, and better performance monitoring.
- Native Partitioning: MySQL 5.7 expanded its partitioning capabilities by introducing native partitioning support for InnoDB tables. This allowed for efficient data organization and management of large datasets across multiple storage devices.
- Improved Optimizer and Query Execution: MySQL 5.7 included various improvements to the query optimizer, resulting in better query performance. It introduced new optimizer hints, enhanced EXPLAIN output, and additional optimizations for subqueries and joins.
- Other Features: MySQL 5.7 also introduced several other features, such as a new sys schema for easy access to diagnostic information, improved security options, support for generated columns, and enhanced monitoring and administration capabilities.
Please note that this information is based on the knowledge available up until September 2021, and there may have been additional updates or features introduced in later versions of MySQL.
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