Wednesday, July 17, 2019

MySQL server Essay

When a thickening connects to the MySQL legion, the horde uses the username provided by the customer and the lymph gland forces to select the appropriate accounting system course of action from the mysql.user table. It then uses this course of study to authenticate the client. in the beginning MySQL 5.5.7, the server authenticates the password provided by the client against the parole column of the account wrangle. As of MySQL 5.5.7, the server authenticates clients using plugins. Selection of the suitable account row from the mysql.user table is establish on the user name and client host, as before, but the server authenticates the client credentials as follows The server determines from the account row which credential plugin applies for the client.If the account row specifies no plugin name, the server uses native earmark that is, authentication against the password stored in the Password column of the account row. This is the same authentication method provided by MySQL servers older than 5.5.7, before pluggable authentication was enforced, but now is implemented using ii plugins that are strengthened in and cannot be disabled. If the account row specifies a plugin, the server invokes it to authenticate the user. If the server cannot find the plugin, an error occurs. The plugin returns a term to the server indicating whether the user is permitted to connect.Whereas SQL Server supports two authentication systems, Microsoft Access supports three. Unfortunately, three is not necessarily better than two, and the Access guarantor system is not suited for mammoth enterprise usage. The most commonly utilize is Database Password. A database password is simply a password that Access prompts you to type in when opening the database. A database can collect only one password. You cannot assign a different password to different users.

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