Database experiment design -- circle of friends [perfect relationship model design]
The database is really not easy to learn 23333. Many people have to search the Internet by themselves. 1, Theoretical level Circle of friends table structure There are four core tables involving circle of friends data: One is publishing. Publishing data records all feed s from all users. For exUTF-8...
Posted by romilbm on Sun, 17 Oct 2021 10:13:30 +0530
[Redis] 06--Redis architecture design and Application
1, Redis master-slave replication 1. Introduction The read-write capability supported by a single redis is still limited. At this time, we can use multiple redis to improve the concurrent processing capability of redis. How these redis cooperate requires a certain architecture design. Here, we UTF-8...
Posted by atrum on Mon, 18 Oct 2021 22:34:37 +0530
Get started quickly with MongoDB database
MongoDB database 1, Introduction to NoSQL NoSQL(NoSQL = Not Only SQL), which means "not just SQL". In modern computing systems, a huge amount of data will be generated on the network every day. A large part of this data is processed by relational database management system (RDBMS). In 1970, E.FUTF-8...
Posted by paegn on Tue, 19 Oct 2021 01:53:49 +0530
[Web security] injection book -- the cornerstone of SQL injection
It is better to teach people to fish than to teach people to fish Try to be concise and explain the principle of bypass mode clearly in this article [View information] Unsuitable population: 1. A boss who knows the principles of sql injection like the back of his hand 2. Novice without any datUTF-8...
Posted by viperdk on Tue, 19 Oct 2021 07:30:20 +0530
How to master MYSQL quickly? Detailed explanation of all SQL topics on niuke.com [recommended collection]
Friends, if you want to enter a good company in the future, I suggest you must brush the questions. If you don't know anything at present, just stay at the level of knowing that SELECT is used for query, and want to quickly master MYSQL, then brushing questions and adding nothing in the processUTF-8...
Posted by ohenewa on Tue, 19 Oct 2021 12:52:43 +0530
2021SC@SDUSC SQLite source code analysis -- B tree API and cursor
1, API of B-tree module B-tree modules have their own APIs, which are independent of SQLite external APIs. These APIs are mainly tailored to SQLite requirements, so they are not applicable to other databases. To better understand the internal mechanism of SQLite, it is necessary to understand UTF-8...
Posted by Roo on Wed, 20 Oct 2021 23:34:58 +0530
MySQL learning and sorting - Code farmer's advanced road
5: Sub database and sub table MySQL sub database and sub table mainly solves the problem that when the data scale is large to a certain extent, the query performance will decline sharply, and even the data capacity will break through the upper limit of single disk, so it has to be stored on mulUTF-8...
Posted by cheikhbouchihda on Thu, 21 Oct 2021 02:21:17 +0530
mysqldump Usage Summary
catalogue 1, Introduction 2, Required permissions 3, Tool usage restrictions 4, Examples of common methods 4.1 full database backup 4.2 specified schema backup four point three Specify table backup 4.4 export text data (- T) 4.5 backup according to conditions 5, Data import 1, Introduction mysqUTF-8...
Posted by Ludo Lambrechts on Thu, 21 Oct 2021 07:59:26 +0530
MySql statement optimization summary and parsing validation, super detailed!
We use the following tables as validation for sql optimization: CREATE TABLE `good` ( `good_id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'commodity id', `good_code` varchar(30) NOT NULL COMMENT 'Commodity Code', `title` varchar(100) DEFAULT NULL COMMENT 'Title', `sku_title` varchar(256) DEFAUUTF-8...
Posted by samohtwerdna on Thu, 21 Oct 2021 19:49:31 +0530
mybatis framework usage details + operation examples
catalogue mybatis framework 1. Problems in JDBC programming and JDBC 2. Introduction to mybatis framework 3. Use examples of mybatis 3.1 manage dependencies through maven (pom.xml) 3.2 global configuration file (mybatis config. XML) 3.3 Student class in POJO 3.4 interface file in mapper (studenUTF-8...
Posted by j_miguel_y on Fri, 22 Oct 2021 00:25:29 +0530