SQLServer加速查询的主从表技术（sqlserver主从表）
SQL Server Master-Slave Tables Accelerating Query Technology
SQL Server is a powerful relational database management system developed by Microsoft, which is often used to store business data and supports a variety of effective query techniques. The “Master-Slave Table” technology is one of these effective techniques, which can be used to speed up the query process.
The basic concept of the Master-Slave Table technology is to split a single table into two or more tables, known as the “master table” and the “slave tables”. The master table contains the primary key and the fields that contain data that may form the basis for joins in a query, while the slave tables contain related data. A query can then be written that accesses the master table, and uses a join to access the data from the slave tables. This can improve the performance of the query significantly.
For example, in a table containing data about students, the master table might contain the primary key (student_id) and the basic student details such as first name and last name, while the slave table might contain detailed data about the student, such as the student’s birthdate, address, and contact information. In this case, a query could be written to access the student’s birth date that would simply involve joining the master table to the slave table using the student_id as the joining element.
Master-Slave Table technology can be used in a number of ways to improve query performance. For example, the tables can be indexed appropriately to make efficient use of memory and disk space to store data. Furthermore, queries can be written to take advantage of table partitioning, which can be used to logically divide a table into smaller pieces to reduce the time taken to locate data. Also, query optimization techniques such as using stored procedures, using database views and using materialized views can be used to improve performance.
Finally, database administrators can utilize database triggers, which are attempts at automated database maintenance. Triggers are database routines that are executed whenever a specific database operation is conducted. In this case, database triggers could be used to automatically update one or more slave tables whenever the master table is updated. This would ensure that the most current data is always available for query.
In conclusion, “Master-Slave Table” technology is an effective and efficient way to speed up query processing in SQL Server. By splitting a single table into two or more tables, related data can be isolated and queries written to use efficient query techniques. Furthermore, database triggers can be used to ensure that the data is always up to date.
