Mybatis Environment Configuration and CRUD

What is MyBatis? MyBatis is an excellent persistence layer framework that supports custom SQL, stored procedures, and advanced mapping.MyBatis eliminates almost all JDBC code and setting parameters and getting result sets.MyBatis can configure and map raw types, interfaces, and Java POJO s (Plain Old ...

Posted by smitho on Mon, 15 Jun 2020 18:22:30 -0700

Five cases of data analysis: handle data processing (basic, detailed)

Article catalog Data analysis with python (Second Edition) Example 1. Data analysis of time zone 1.1 pure python time zone count 1.2 time zone counting with pandas Example 2. Analysis of film rating data 2.1 difference of measurement and evaluation Example 3. Data analysis of infant names in the Un ...

Posted by revraz on Mon, 15 Jun 2020 01:30:32 -0700

Chapter 5 - database integrity

Database integrity: prevent non semantic and incorrect data from entering the database; Database security: prevent illegal users from intruding into the database and illegally accessing the database data. 5.1 entity integrity PRIMARY KEY Entity integrity definition: single attribute - column level, tabl ...

Posted by pillarofautumn on Mon, 15 Jun 2020 01:01:57 -0700

Django CBV: form processing

CBV Reference link: https://docs.djangoproject.com/en/3.0/topics/class-based-views/generic-editing/ (official document of Django) CBV is Class Based View, which is to build a view through class. Different from FBV(Function Based View), by using class inheritance and mixins, CBV has higher code ...

Posted by miha on Mon, 15 Jun 2020 00:51:15 -0700

Design and implementation of book management system

Design and implementation of book management system The structure of library staff is complex, the number of staff is limited, and it involves a wide range of aspects. If manual operation is also used to deal with the problem of book borrowing, the work will be very tedious, requiring a lot of manpow ...

Posted by unplugme71 on Sun, 14 Jun 2020 23:18:20 -0700

MySQL build master slave high availability

Title: Article content output source: Lago education Java high salary training camp. This article is part of the notes in the MySQL learning course. This post explains in detail how to build MySQL with high availability and provides a solution to solve the problem that the common master-slave replicat ...

Posted by sgtbash on Sun, 14 Jun 2020 21:38:57 -0700

casbin of Go daily

brief introduction Privilege management is a necessary module in almost every system. If the project development needs to realize the right management every time, it will undoubtedly waste the development time and increase the development cost. As a result, the caspin library appears. Caspin is a powerful and efficient access control library. I ...

Posted by topsub on Sun, 14 Jun 2020 18:44:09 -0700

Speech emotion recognition based on CNN+MFCC

In recent years, with the rapid development of information technology, intelligent devices are gradually integrated into people's daily life. As one of the most convenient ways of human-computer interaction, voice has been widely used. It is the goal of countless researchers to make machines understand ...

Posted by neodaemon on Sun, 14 Jun 2020 18:29:58 -0700

Oracle trail notes

Oracle trail learning experience stored procedure Annotate a custom column name Incoming parameters: field name and annotation create or replace procedure csp_col_comment ( p_column_name varchar, --Field name p_Title varchar, --field comment p_RetVal Out integ ...

Posted by techjosh on Sat, 13 Jun 2020 23:52:50 -0700

This paper grasps the methods of data horizontal merging by various common softwares

There is a recorded video at the end of the article. If you are not comfortable with the article, you can slide to the end of the article and watch the video. I hope you like it~ In the work, we often meet the need of merging multiple tables into one table; in the interview, we are sometimes asked by th ...

Posted by minus4 on Sat, 13 Jun 2020 23:34:35 -0700