NAV: SLTechnology News&Howtos > Database >

• 

  2.windows installs mongodb Enterprise Edition

  The latest content of 2.windows installation mongodb Enterprise Edition will be updated at the origin server. To reprint, please keep the original link: http://dashidan.com/article/mongodb/index.html ① download Mongodb

  2022-06-01 22:33:47 Views: 285
• 

  SQLite authorized Action coding (AuthorizerAction

  This article is mainly related to the registration authorization callback function: for more information on how to call sqlite3_set_authorizer, please refer to other chapters! Extracted from: https://www.sqlite.org/c3ref/c_alter_tab

  2022-06-01 22:33:46 Views: 282
• 

  Cassandra cluster management-replace exception nodes

  Cassandra cluster management-replace exception nodes replace exception cluster nodes, using the JVM startup flag Dcassandra.replace_address_first_boot = start. Once this property is enabled, the node will start in hibernation

  2022-06-01 22:33:46 Views: 213
• 

  4.MongoDB Command Line

  The latest content of the 4.MongoDB command line will be updated at the origin server. To reprint, please keep the original link: http://dashidan.com/article/mongodb/index.html ① MongoDB Command Line introduction MongoLife

  2022-06-01 22:33:46 Views: 259
• 

  Realization of redis client Singleton + hbase client Singleton with python

  When the business needs a large number of connections to redis or hbase, a large number of connections will result in a large number of socket occupancy, resulting in no more ports for the server to allocate. In this case, the best solution is to implement the singleton mode of client connection and keep the connection forever.

  2022-06-01 22:33:46 Views: 205
• 

  One article takes you to understand dirty reading, phantom reading, unrepeatable reading and mysql lock, transaction isolation.

  First of all, let's talk about the four characteristics of database transactions 1. The four characteristics of ACID transactions are ACID (not "acid"....) (1) A: Atomicity means that transactions are either fully executed or not executed at all. (2) C: consistency (Con)

  2022-06-01 22:33:32 Views: 224
• 

  Main functions of Kubernetes

  Kubernetes main functions 1, data volumes    Pod between containers to share data, you can use data volumes. 2. Application health check    container service may be blocked and unable to process requests. You can set a monitoring and checking policy to ensure application robustness. 3. Copy the application program

  2022-06-01 22:33:31 Views: 239
• 

  Win2003 Server Manager precursor Detection

  For the Windows 2003 server, a big threat also comes from the guessing of the system account password, because if the poorly configured server allows the establishment of an empty session, so that the user can carry out remote account enumeration, etc., and then guess the password according to the enumerated account.

  2022-06-01 22:33:31 Views: 206
• 

  Centos7 installs MySQL 8.0.18rpm package

  Download the rpm package on the official website, but the package dependency has not been solved. You need to download the following package mysql-community-common-8.0.18-1.el7.x86_64.rpmmysql-community-libs-8.0.18-1.e

  2022-06-01 22:33:31 Views: 295
• 

  Concept and practice of MySQL full backup and recovery

  MySQL full backup and recovery the classification of database backups MySQL full backup and recovery MySQL differential backup and recovery MySQL incremental backup concept MySQL backup and recovery operation 1. Preface MySQL with the rapid development of office automation and e-commerce, enterprise trust

  2022-06-01 22:33:31 Views: 285
• 

  MongoDB replication set management

  1. The slave node that is configured to allow data to be read from the default MongoDB replication set from the node cannot be read, and the rs.slaveOk () command can be used to allow data to be read from the slave node. Abc:PRIMARY > show dbs # is available on the primary node

  2022-06-01 22:33:30 Views: 296
• 

  Mysql installation

  1. Installation method there are four common methods of mysql installation. 1yum\ rpm is simple and fast. It cannot be customized and can be decompressed in binary system. Mysql-a.b.c-linux2.x-x86_64.tar can be used without installation in simple configuration.

  2022-06-01 22:33:30 Views: 273
• 

  T-SQL advanced query statement

  System function: string function: select 'operation and maintenance engineer' + name + 'base salary is:' + CAST (base salary as varchar (10)) + 'yuan' from A1where job = 'operation and maintenance engineer' # display

  2022-06-01 22:33:18 Views: 207
• 

  Basic operation of MongoDB

  MongoDB: there are collections and document concepts set = = table document = = rows in database table! Create a database (bosenru) > use bosenru;switched to db Bosenrusting! Insert a picture into the bosenrui

  2022-06-01 22:33:17 Views: 288
• 

  Write down the problem of database connection

  Recently, when I was working on a project, I found a problem. When the website was opened, I stopped and turned. About 5 minutes later, I returned to the 504 gateway and timed out. At that time, my first reaction was that there was something wrong with my network architecture, so I looked it up from the front-end LVS. My architecture is LVS+NGINX+TOMCAT.

  2022-06-01 22:33:17 Views: 257
• 

  Two coquettish operations for updating hot lines with large concurrency

  There are two operation tags for updating large concurrent hot lines: if insert_slot select..for_update rand wants the performance of db operations to be high enough, ingenious design is very important, and the scope of transactions should be as small as possible. Normally, we use someone

  2022-06-01 22:33:17 Views: 276
• 

  Mongodb Clone Local collection

  Mongodb does not provide a way to copy collections locally, so you can write a circular insertion method to complete mongodb local cloning of a collection data: db.source_collection.find (). ForEach (functi

  2022-06-01 22:33:17 Views: 200
• 

  Mongo deletes duplicate lines

  Db.qatest2.aggregate ([{$group: {_ id: {date:'$count_date',name:'$committer_name',project:'$project_

  2022-06-01 22:33:17 Views: 241
• 

  Mysql column subquery

  # case: returns the SELECT last_nameFROM employees WHERE department_id IN (SELEC) of all employees in a department whose location_id is 1400 or 1700

  2022-06-01 22:33:16 Views: 232
• 

  MySQL basic query example (1)

  1. Create required tables and insert data

  More Database

  • 

    What are the differences between the storage engines commonly used in MySQL?

    This article is to share with you about how common storage engines in MySQL differ from each other. The editor thought it was very practical, so I shared it with you as a reference. Let's follow the editor and have a look. The four storage engines commonly used in MySQL are: MyISAM storage

    2022-06-01 03:50:57Details

  • 

    The strongest snail has unlimited resources to buy the cracked version so that you can play continuously.

    The strongest snail unlimited resources in-house cracked version is a very popular leisure adventure nurturance mobile game recently. The painting style of the game is very strange, with a lot of interesting copy content challenges, players are like watching the story while playing the game, very interesting. In the game, you will change.

    2022-06-01 04:48:35Details

  • 

    The extraction time of bid evaluation experts, how long in advance is appropriate?

    Article 22 of the http://www.zhaobiao.cn/ measures for the Administration of experts on Evaluation of Government Procurement (hereinafter referred to as the measures) stipulates that "in principle, the time for the selection of evaluation experts shall be half a day or one day before the bid opening, and shall not exceed two days under special circumstances.

    2022-06-01 06:18:08Details

  • 

    What are the differences in the implementation of delete table operation in MySQL

    This article is to share with you about the differences in the implementation of table deletion in MySQL. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look. This paper mainly talks about three operations of deleting tables in mysql, delete statement and tru.

    2022-05-31 23:37:44Details

  Recommended More >

  • 

    Build zoopker+hbase environment

  • 

    Lenovo Rescue Y700 2023 tablet push ZUI 15.0.723 system Grayscale Test: add

  • 

    Cybertruck: future species redefine cars

  • 

    An example Analysis of the Wechat Web Landing Authorization of the Wechat Public platform of php version

  • 

    What are the relevant knowledge points of PHP class

  

  Latest Network Security More Network Security >

  • What is a VPN? Why You Need a VPN, and How to Choose the Right One
  • Download and update plug-ins for 10.nessus leaky scan system
  • AAA authentication of network equipment
  • NSA: five principles for operating SOC (including interpretation)
  • Data desensitization-- what is data desensitization
  • [operation and maintenance] part 5: data center improvement operation and maintenance, ITIL and ISO2000
  • VMware operation and maintenance-when HA is enabled in the data center, HA agent reports an error
  • Cross-terminal file transfer how to achieve "left-hand copy, right-hand paste" real-time transmission?
  • How to realize MAC address Authentication in Local area Network
  • Common failures and Solutions of Desktop Video Files

  Latest Internet Technology More Internet Technology >

  • Build zoopker+hbase environment
  • Version control system (git + gitolite)
  • [new Dream teacher shares] the correct "posture" of distributed locks
  • How to build a mother-infant community
  • Spring realizes the switch between development and test environment through profile
  • The latest version 2.7? the latest version of DataPipeline data fusion products
  • Serial port debugging assistant, VB6.0 development
  • 7. Flink-- Asynchronous IO
  • The understanding of the pain of team Transformation
  • How slow is the JDBC of Oracle and MySQL?

  Latest Development More Development >

  • An example Analysis of the Wechat Web Landing Authorization of the Wechat Public platform of php version
  • What are the relevant knowledge points of PHP class
  • What are the skills of session session operation in PHP
  • What if VS2008 cannot view STL values directly?
  • What technology should middle and senior PHP programmers master?
  • What if the mysql database connection resources cannot be released in CI framework?
  • What about ajax cross-domain access error 501?
  • What is the RPC framework?
  • What if .net mvc exceeds the maximum request length?
  • Example Analysis of the principle of php pagination

  Latest Database More Database >

  • Oracle 10g rac modifies public ip and vip
  • Simple misoperation recovery
  • 2018 OCP 052 up-to-date question bank and answers-35
  • Ocp latest question bank 052 new question tape answer collation-36 questions
  • Analysis of 052 new questions in OCP latest question bank-with answers-question 37
  • CentOS 7.5 1804 yum install Postgre
  • OCP certification 11g 052 exam latest question bank with answers-38 questions
  • MongoDB uses group by and displays other column max values
  • Mongodb timestamp to date format statistics
  • Mongodb query case, golang Library mgo case

  Latest Servers More Servers >

  • How to configure SSH and Xshell remote connection servers in Linux
  • 5 minutes getting started with lsyncd
  • Building MySQL Database based on centos7
  • CentOS 7.7 two ways to install and configure JDK 11 LTS
  • A high-quality tool to improve enterprise development efficiency: rapid development platform
  • How to batch create alert for resource group virtual machines in Azure practice
  • The use of ​ Azure Storage series in AzCopy in blob
  • Implementation of StatefulSet (stateful Service) based on K8s
  • Azure App Service Vertical and Landscape Scalin
  • What is Cloud Computing and how to learn Cloud Computing Development quickly

  Latest Mobile Phone More Mobile Phone >

  • Apple may soon launch a new AirPods
  • Apple AirTags and new iPad Pro will be launched in March
  • You can now test driving Google's self-driving car.
  • SCUF launches Instinct and Instinct Pro game consoles for Xbox Series Xamp S
  • Samsung partnered with iconic fashion brand Thom Browne Limited Edition Galaxy Z Flip
  • OnePlus Buds Pro is definitely an excellent product of OnePlus.
  • Reveal the complete specification of Vivo S7e 5G three-camera rear camera
  • Apple will increase AirPodsPro production to 2 million units per month
  • Xiaomi Mi9T smartphone users are tired of battery problems in MIUI 12.
  • Samsung will launch a cheap version of Galaxy M02 in the European market on January 7th

  Latest Android Software More Android Software >

  • "Apple Music" has an Android version of Apple TV. Why not?
  • The Android version of the Apple Music app removes the Beta tag: going formal
  • Tencent QQ launches a new video social application DOV Android DOV has been launched
  • Sunflower Android 6.5 release download: mobile phone can record the whole process
  • Can you effectively whiten by drinking a glass of lemonade every day? The answer to Ant Manor today
  • Android version of Aoyou browser 5.0.5 officially released (with download address)
  • Ocean Rabbit Android version of the mobile phone download address similar to the octave sauce voice-activated game
  • How to quickly take screenshots of Huawei P30 mobile phone
  • Where did the story of Meng's mother's three evictions take place? Today's Ant Manor class
  • The online poke function of Android QQ is similar to that of Wechat.

  Latest Apple Software More Apple Software >

  • Apple MFi Certification (data Line / Accessories) query entrance-Apple official website authentication address
  • Apple Apple Store update: add 3D Touch operation
  • Apple paid a dividend of $3.2 billion in the third quarter to buy back $10 billion of shares.
  • Google updates Chrome browser: support Touch Bar on new Mac
  • Apple releases iOS11.2.5 official firmware upgrade iOS11.2.5 update function content
  • Apple pushes iOS 13.4 Beta 1 to support CarKey
  • Microsoft releases iOS customized news application News Pro
  • IOS 11 beta 5 release iCloud message removed
  • The macOS version will be able to run applications originally developed for iOS devices.
  • What are the new features and contents of iOS12 updated in Apple's iOS12 system?

  Latest Computer Software News More Computer Software News >

  • How to convert video to mp3 format tutorial format factory converter software recommendation
  • The official version of the dynamic wallpaper software Wallpaper Engine supports simplified Chinese.
  • Joomla 3.8.13 release addresses 5 security vulnerabilities
  • How to change the background Color of cad2010 tutorial cad modify the background color of layout
  • DNF model file name corresponds to what occupation each role the latest NPK comparison table
  • How to remotely control a computer with a mobile phone in teamviewer
  • Microsoft releases Windows 10 SDK build 16278 Preview
  • Ps liquefaction tool does not use how to set up can not be used to solve the problem of unresponsive
  • Google PixelC how to unlock root unlock Bootloader with PixelC tutorial
  • DragonFly BSD 5.0 release: support for the next generation of HAMMER2 file system

  Latest IT Information More IT Information >

  • Lenovo Rescue Y700 2023 tablet push ZUI 15.0.723 system Grayscale Test: add
  • Cybertruck: future species redefine cars
  • Redmi led and domestic supply chain enterprises jointly announced: launch the
  • 25th anniversary work, full of feelings but lack of sincerity: "Wonderland of the brave fighting dragons and monsters Wonderland 3"
  • Streacom launches SG10 high-end passive heat dissipation chassis: 600W hot 1300 US dollars
  • The public test of the 3D role-playing strategy game "Girl Front 2: chase" has been opened, and Android, iOS and PC interoperate with each other.
  • New energy car market: the price war begins and the value war ends.
  • If you take a picture like this on a snowy day, the picture will be more interesting.
  • In 2022, the scale of underage netizens in China exceeded 193 million, with a penetration rate of 97.2%.
  • Seven days after its release, "Detective Conan: the Fish Shadow of Black Iron" earned more than 100 million points at the mainland box office and 6.6 points from Douban.