发布于 2015-02-03 01:25:31 | 281 次阅读 | 评论: 0 | 来源: 网友投递
Mysql关系型数据库管理系统
MySQL是一个开放源码的小型关联式数据库管理系统，开发者为瑞典MySQL AB公司。MySQL被广泛地应用在Internet上的中小型网站中。由于其体积小、速度快、总体拥有成本低，尤其是开放源码这一特点，许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。
MySQL 5.5.42 发布，此版本现已提供下载，更新内容如下：
新功能和功能改进
支持 SSL 2.0 协议，禁用 SSL 3.0 协议，同时还支持 TLS 1.1 和 TLS 1.2 协议 (Bug #19820550)
References: See also Bug #19921150.
yaSSL 升级到 2.3.7 版本 (Bug #19695101, Bug #20201864)
mysql-test/std_data 上的 SSL 证书有效期延长至 2029 年(Bug #18366947)
Bugs 修复
InnoDB: A multiple-table delete operation caused the server to halt. (Bug #19815702)
Replication: If a DROP DATABASE statement failed on the master, mismatched tables could be left on the slave, breaking replication. This was caused by the DROPTABLE statement being binary logged if at least one table was deleted during the DROP DATABASE operation. The fix ensures that in such a situation the DROP TABLE statement is binary logged with the IF EXISTS option. (Bug #74890, Bug #20041860)
Unlocking a temporary table after locking and truncating it could cause a server exit. (Bug #19786309)
The Enterprise Encryption plugin could mishandle string arguments. (Bug #19688008)
FLUSH TABLES on a FEDERATED table failed if the table had been idle longer than the wait_timeout time plus the TCP keepalive time. (Bug #17599258)
Selecting all columns from INFORMATION_SCHEMA.TABLES did not reopen tables if they were in the table cache, but selecting a subset of those columns under the same conditions did reopen tables. (Bug #16869534)
MySQL failed to compile with GCC 4.9.1 in debug mode. (Bug #74710, Bug #19974500)
A file created for an internal temporary table could cause problems if the file was orphaned for some reason and the file name was reused for later queries. (Bug #32917, Bug #11747548)
同时还发布了 MySQL 5.6.23，更新详情请看这里。
MySQL是一个开放源码的小型关联式数据库管理系统，开发者为瑞典MySQL AB公司。MySQL被广泛地应用在Internet上的中小型网站中。由于其体积小、速度快、总体拥有成本低，尤其是开放源码这一特点，许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。