Database interview questions sharing (1)

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Please briefly describe the three major database paradigms?

Briefly describe what is SQL Server?

How does MySQL optimize SQL query statements? Key points

Briefly describe how to optimize MySQL database? focus

How to optimize the MySQL database with an increment of more than 50,000 entries a day, which is expected to be maintained in three years?

Explain why Oracle type4 drivers are called thin drivers?

How to understand field redundancy when designing database tables?

How to check whether MySQL is running?

How to start or stop the MySQL service?

How to log in to MySQL through Shell?

MySQL how to list all databases?

How can MySQL switch to a certain database and work on it?

How to list all tables in a database in MySQL?

How does MySQL get the names and types of all Field objects in a table?

Briefly describe how to use SQL commands to delete tables?

Briefly describe how to delete a database in SQL?

Suppose you have a table named 'xyz' which has multiple fields like 'createtime' and 'engine'

Briefly describe how to know the number of rows in the table?

Does MYSQL support transactions?

What are the characteristics of MYSQL compared to other databases? focus

What is the difference between database varchar and char? focus

What types of database transactions are there?

Please briefly describe the names of the four transaction isolation levels supported by InnoDB in MySQL, and the differences between them step by step? focus

MySQL table about permissions?

What are the MySQL storage engines? focus

What are the methods and commands for MYSQL database server performance analysis? Key points

What field type is best to use to record currency in MySQL?

What is the difference between MYISAM and INNODB?

How to improve the performance of MySQL insert? focus

If there is a problem with the performance of DML statements such as insert, or the existence of other problems, it may cause synchronization delays, so how to effectively avoid synchronization delays? focus

Briefly explain the understanding of MySQ GTID?

Innodb is a row lock, when will a row lock be generated, and under what circumstances will it become a table lock?

What parameters need to be adjusted for the newly created MySQL database? focus