Design of simple database application system in Experiment 6 of SQL Server Database Principle

SQL Server experiment series Design and implementation of simple database application system in Experiment 6 The aim of the experiment was to observe the effect of the treatment on the quality of the patients (1) Understand and use common steps of database design to design conceptual model (ER model ...

Posted on Tue, 30 Jun 2020 00:50:15 -0400 by habanero25

Application of partition table in MySQL database

What is partition table First of all, let's look at the normal storage of tables The upper part is innodb engine, the lower part is myISAM engine customer_login_log.frm #The metadata of each table is saved, including the table structure and the corresponding definition, regardless of the number Acc ...

Posted on Tue, 30 Jun 2020 00:40:43 -0400 by ghostrider1

spring annotation Driven Development -- attribute assignment

1. @Value assignment and @ PropertySource loading configuration file SpEl Introduction: https://www.jianshu.com/p/e0b50053b5d3 @Value assignment public class Person { //Use @ Value to assign Value; //1. Basic value //2. You can write a spiel; ා {} //3. You can write ${}; take out the val ...

Posted on Tue, 30 Jun 2020 00:29:28 -0400 by utahcon

lc75 quick sort

Given an array of n elements including red, white and blue, sort them in place so that the elements of the same color are adjacent and arranged in the order of red, white and blue. In this question, we use integers 0, 1 and 2 to represent red, white and blue, respectively. be careful: You can't use the ...

Posted on Tue, 30 Jun 2020 00:19:06 -0400 by ~n[EO]n~

Using Netty to implement RPC

As an asynchronous event driven network application framework, Netty can be used to rapidly develop maintainable high-performance servers and clients. The bottom layer of Dubbo, a famous RPC framework in China, uses Netty as network communication. In this article, we will explore the nature of RPC fr ...

Posted on Tue, 30 Jun 2020 00:00:16 -0400 by adams0423

Spring security

The mind map is as follows RBAC authority analysis RBAC is the full name of role-based permission control. This section will describe RBAC from the following aspects: what is RBAC, model classification, what is permission, the use of user groups, and case analysis Mind map Draw a mind map as follows ...

Posted on Mon, 29 Jun 2020 23:20:10 -0400 by Ward

Multithreaded thread pool

The start and end of each thread consumes time and resources. If a lot of threads are used in the system, a large number of start and end actions will cause the performance of the system to change card and slow down the response. In order to solve this problem, the thread pool is introduced. The patter ...

Posted on Mon, 29 Jun 2020 22:49:53 -0400 by sheriff

Detection of pneumonia by X-ray film based on convolution neural network

Prediction of pneumonia by X-ray film based on convolution neural network [!] the task is completed at the beginning of my freshman year, and my professional knowledge is not yet mature 1 mission objective Understanding the lung and the types of lung diseases Principle of X-ray inspection and c ...

Posted on Mon, 29 Jun 2020 22:29:41 -0400 by herrin

Quick media Chinese QR code support

Quick media Chinese QR code support Quick-Media The project provides a series of out of the box tools for multimedia operations, such as image editing and synthesis, markdown/html/svg rendering, audio processing; and of course, the two-dimensional code generation and analysis highlighted in this paper QRcode plugin supports the generation of ...

Posted on Mon, 29 Jun 2020 22:22:46 -0400 by webref.eu

[reinforcement learning] example 1 of implementing q-learning in python

Author: hhh5460 Address: https://www.cnblogs.com/hhh5460/p/10134018.html Problem situation -o---T#T is the location of the treasure, o is the location of the explorer This time, we will use the q-learning method to implement a small example. The environment of the example is a one-dimensional world, and there are treasures on the right sid ...

Posted on Mon, 29 Jun 2020 22:14:31 -0400 by Hardbyte