how to improve database performance

The three functions park, unpark, and ord are not used much in our work. In my recent work, binary stream is used for communication, and the interface is received in php. At that time, I checked a lot of materials. Because they are rarely used, and

1. selecting the most suitable field attribute MySQL can support access to large data volumes. However, the smaller the table in the database, the faster the query will be executed on it. Therefore, when creating a table, we can set the field width

At work, I gradually learned that park, unpark, and ord are powerful in processing binary bytes. Next I will introduce them one by one. At work, I gradually learned that park, unpark, and ord are powerful in processing binary bytes. Next I will

1. selecting the most suitable field attribute MySQL can support access to large data volumes. However, the smaller the table in the database, the faster the query will be executed on it. Therefore, when creating a table, we can set the field width

1. Overview of new features of Oracle10gInMemoryUndo, the pre-created image will be created in the Buffer, and the corresponding Redo will be recorded. Then the Undo data will also be written to the UNDOSEGMENT. When consistent reading or rollback

About database (MySQL) Transactions A transaction is a logical execution unit consisting of database operation sequences of one or more steps. These operations are either executed in full or abandoned. Because MySQL databases are used for php

Environment 1: 1 Platform: IBMAX360, 4G memory windows2kadvServersp3 + oracle816 exclusive mode 2 memory allocation parameters .. processes ................. 1000 .. shared_pool_size .......... 240000000 .. large_pool_size ........... 614400 .. java_

In database optimization, it is one of the most common and effective methods to minimize the data size and minimize the space occupied by tables on the hard disk. Because of data reduction, the read/write speed of the hard disk can be improved, and

We all know that there are two processes in the Oracle database that are very small, but their practical functions are very powerful. However, it is often ignored by the related administrators of Oracle databases because of its small size. This time

Eight methods for optimizing MySQL database performance (2) bitsCN.com Create table customerinfo(CustomerID int not null,Primary key (CustomerID)) TYPE = INNODB;Create table salesinfo(SalesID int not null,CustomerID int not null,Primary key

MySQL database performance optimization solution bitsCN.com MySQL database performance optimization solutionThe actual operating scheme for database performance optimization. with the continuous development of MySQL database, the performance

Eight methods for optimizing MySQL database performance (2) bitsCN.com Create table customerinfo(CustomerID int not null,Primary key (CustomerID)) TYPE = INNODB;Create table salesinfo(SalesID int not null,CustomerID int not null,Primary key

Users and permissions are the most basic security management mechanisms for Oracle database systems.When a user logs on to Oracle via Sql*plus or an application, a bulge, the user name and password, must be provided.You must also have certain

OLTP, also called online transaction processing ( Online Transaction Processing ), represents a very high-transactional system, typically a highly available online system, with small transactions and small queries as the primary evaluation of their

1. select the most suitable field attribute MySQL can support access to large data volumes, but generally, the smaller the table in the database, the faster the query will be executed on it. Therefore, when creating a table, we can set the field

  When looking at the example library, we found that some table DDL not only has the column part, but also has a lot of partition parts. I don't understand what it means. So I searched and found that it was a feature of oracle. The following are

"Editor's note" as an open source object-relational database, Postgres has been loved by many developers. Recently, Postgres officially released version 9.5, which has been a lot of repair and functional improvements. This article will share 10

Several often overlooked but useful tags in the PHP smarty template engine, including capture tags, config_load tags, php tags, strip tags, fetch tags, and how to use define-defined constants directly in Smarty templates , this article will analyze

Recommendation 1: NULL values do not necessarily occupy space. Here, I will give you literacy first. Some database tutorial administrators think that null values do not occupy system resources. In fact, this is a wrong idea. During database design,

Create Database for basic DDL statements In SQL terminology, a database is a container that contains the relevant base table View index stored procedures and itsBefore creating these objects, the object must have a database that stores them.Step by