The simplest 11g Active deployment uard (ADG) configuration process (project steps)
I. Environment Introduction:I first installed a set of database software on the two Linux virtual machines db01 and db02, and created a database named woo on the db01
RMAN backup and recovery-parameter file Restoration
In RMAN, "restoration" and "restoration" have different meanings. "restoration" refers to accessing the previously generated backup set to obtain one or more objects, then restore these objects at
MySQL 5.7 new feature: Generated Column (function index)
MySQL 5.7 introduces Generated Column. This article briefly introduces the usage and precautions of Generated Column, and provides a quick and complete tutorial for readers to understand MySQL
Summary of causes of index failure in Mysql and summary of index failure in mysql
Http://blog.csdn.net/hehexiaoxia/article/details/54312130
When performing queries in a database, you often find that the query is slow, but you have already created
MySQL Query Optimization-WHERE statement optimization, mysql-whereMySQL Query Optimization-WHERE statement Optimization
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Environment:
Use SQL server to add a system administrator account and an SQL System Administrator Account
To add a system administrator account through SQL SERVER, you must have sufficient permissions to remotely connect to the database and execute the script
MySQL Study -- Use of MySQL tools (phpMyAdmin) and -- mysqlphpmyadminMySQL Study-Use of MySQL tool (phpMyAdmin)System Environment: RedHat EL6Database: MySQL 5.6.4-m7PhpMyAdmin is a software tool written in PHP. It is a MySQL database management tool
Alibaba Cloud SQL Intelligent Query analyzer, a database query and analysis management tool developed by delphi.
To facilitate your work, you can use a database query and analysis management tool developed by delphi to share with you the following
Database Design of customer management system and database of Customer Management System
The Database Design of the customer management system is developed using the SQL Server 2008 database. The customer management system (Customermanagement)
Do you really understand the nosql world ?, Nosql world
Recently, I want to sort out my nosql knowledge and some nosql databases. One is to deepen your understanding of nosql, and the other is to organize your knowledge to make it more
SQLite tutorial (II): C/C ++ interface introduction, sqlite tutorial
I. Overview:
Five of the C/C ++ interfaces provided by SQLite are core interfaces. In this blog, we will mainly introduce their usage and the core SQLite objects they involve, such
Multiple result sets of report data sources and report data sources
Diverse data sources are becoming more and more common in report development. the effective support of the collection and computing reports for diverse data sources makes the
Http://boylook.itpub.net/post/43144/520538
The ocp SQL section has the following question:
You need to add a not null constraint to the QUANTITY column in the PO_DETAIL table. Which statement shocould you use to complete this task? Correct A. alter
The data pump is a server tool, and the exported files are stored on the server where the database is located. Of course, we know that the files can be controlled through directory objects. The directory object has four levels by default. Of course,
Guidance:This article introducesDatabaseThis article is suitable for beginners who have just begun learning databases. I believe that everyone can find their own needs, so everyone can get what they need.
13 database terms:
1. Relational Model: A
Function: automatically deletes the content of a sub-table (foreign key constraint) When deleting a primary table.
Delete a row that contains the primary key value. This value is referenced by a foreign key column in an existing row of another table.
How to migrate?
We learned from the MySQL documentation that InnoDB tablespaces can be shared or independent. For shared tablespaces, all tablespaces are placed in one file: ibdata1, ibdata2 .. ibdataN, in this case, there is no way to migrate
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Create a database table maintenance Specification
It is a good idea to
1. simplify complicated operations by encapsulating processing in easy-to-adapt units.
2. Since a series of processing steps are not required, data consistency is ensured. If all developers and applications use the same stored procedure, the code
With Statspack, we can easily identify the bottleneck of the Oracle database, record the database performance status, and allow remote technical support staff to quickly understand the running status of your database. Therefore, it is important for
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