Database Administrator

MySQL profiling Performance Analysis Tool Brief description: MySQL Query Profiler is a very convenient Query diagnostic and analysis tool that can be used to obtain the consumption of multiple resources in a Query throughout the execution process,

Ajax calling in Oracle Application Express (APEX 4.2) Oracle Application Express 4.2 (APEX 4.2) is a quick Web Application development tool. Ajax requests are sometimes used during web page development. How to create an ajax request: 1. Create

Data room charging system-SqlHelper, charging system sqlhelper I have added a lot of ADO. NET basic knowledge, now it is time to seriously practice it. Next I will introduce the use of SqlHelper IN THE vb.net data center charging system, in the data

Data center fees-configuration files and data center configuration files After knocking on the Layer 3, I finally adapted to a model and changed the Layer 7. With the habit of the layer 3 and the enthusiasm of the layer 7, I began to think. So the

Data structure, data structure and AlgorithmStack 1 stack ConceptStack: a linear table that is limited to insert and delete operations at one end of the table. It is also known as the Last In First Out (LIFO) or the First In First Out (First In Last

Share a MySQL database/table sharding class (php) and mysql database sharding class When the data record of a table is too large, a performance bottleneck will occur. Generally, the corresponding solution is to either create a partitioned table or a

Advantages and disadvantages of paradigm and anti-paradigm When designing databases, there are paradigm and anti-paradigm considerations. The following is a summary. Advantages of paradigm: 1) more rapid updates of the paradigm-based database;

Aerospike-Architecture series big data type, aerospike DatabaseLarge Data Types (big Data type) Bin of the big data type can store a large number of object sets. The object type can be Integer/String/Map/List. A single record of Aerospike can

About SQL data table Stored Procedure table name prefix into dbo code, sqldbo 1. Replace all table names with dbo EXEC sp_MSforeachtable 'exec sp_changeobjectowner ''?'',''dbo'' ' 2. replace all stored procedures with dbo create procedure dbo.

Ora-28001: the password has expired. (password invalid), ora-28001expired. Ora-28001: the password has expired. (password expired) This new oracle11g feature, the default user password is only valid for 180 days. 1. plsql logs in as an

Expdp export encountered ORA-39064: unable to write log file, expdpora-39064 Expdp export encountered ORA-39064: unable to write Log File .. Exported "USER_XXXX". "TAB_YYYY" 0 KB 0-line ORA-39064: unable to write Log File ORA-29285: file write error

SQL statements in game testing and SQL statements in game TestingThe basic content will not be written here.One compound condition is often used in game tests.In the game, you usually need to check the remaining user money. For example, an energy

Batch delete database SQL statements and batch Delete SQL statements Because of project requirements, you need to create a database every time you run case. Although it will be deleted at the end of each execution, it is not guaranteed that the

Install mysql glibc package in linux and mysqlglibc Download mysql: Http://downloads.mysql.com/archives.php If you select a mysql version, you must be optimistic about it later. Such as: mysql-5.0.90-linux-i686-glibc23.tar.gz This example is

08-SQLite in, between, alias, 08-sqlitealiasI. in operator Overview The IN operator allows us to specify multiple values IN the WHERE clause. Syntax: select column_name from table_name where column_name in (value1, value2 ,...); Example 1:

Paradigm analysis, paradigm 1. the paradigm theory is a Codd method used for data modeling. Practice has proved that it is suitable for micro-analysis of a single link. It is better to use the later ER Method for macro analysis. In fact, the

How to describe the basic information of a data table ?, Description Basic Information Recently, I have worked with a colleague to design database tables. After designing each table, we need to record the basic information of the table and send it

16. Binary sorting tree, 16 binary sortingReprinted Please table name Source: http://blog.csdn.net/u0126375011. Binary sorting treeIf the dataset to be searched is an ordered linear table and is stored in sequence, you can use search algorithms such

How to install mysql database under Ubantu, and how to back up SQL files and run SQL files !, UbantumysqlInstalling mysql on ubuntu is actually easier than installing mysql under Windows. Just enter the password once in the middle of the following

Xtrabackup automatic backup script and xtrabackup script # Backup. sh #! /Bin/sh # on xtrabackup 2.2.8 # When you execute it for the first time, it will check whether there is a full backup. Otherwise, create a full database backup first. # When you