Database
background In the traditional project architecture, it is basically a web server (Tomcat and database are deployed independently), which monopolizes the server resources. With the increase of the number of users, concurrent reading and writing to the database will increase the access pressure oUTF-8...
Posted by Satabi2 on Fri, 08 Oct 2021 14:26:30 +0530
All the database learning summary articles are summarized from the Silicon Valley video in Station B. The video links are as follows: [https://www.bilibili.com/video/BV12b411K7Zu] 1. Transactions 1. Definition An execution unit consisting of one or a set of SQL statements that either executes UTF-8...
Posted by mithril on Fri, 08 Oct 2021 21:31:02 +0530
Introduction to mongodb -- installation and simple steps of mongodb 1. Decompression installation To custom directory Modify profile dbpath=D:\APP\mongodb\data # Modify to decompression path logpath=D:\APP\mongodb\log\mongodb.log # Modify to decompression path logappend=true journal=false quietUTF-8...
Posted by gekko on Sat, 09 Oct 2021 05:21:18 +0530
Enterprise training course section 9 This section is mainly about completing didi travel project by yourself. Open the cluster and build the data warehouse first (data warehouse layering) 1, Building a data warehouse - creating tables When we create a table, we first need to clarify the requireUTF-8...
Posted by ohjay on Sat, 09 Oct 2021 06:51:52 +0530
catalogue multi-table query one. Cartesian product two. Internal connection two point one Equivalent connection 2.2 natural connection 3. External connection 3.1 left connection 3.2 right connection Exercise exercise subject Tables used (Student table and SC table) answer multi-table query TherUTF-8...
Posted by pureDesi on Sat, 09 Oct 2021 08:52:49 +0530
1, Foreword abp vnext, which has been used for more than half a year, has a very good development effect. It can be said that it saves a lot of time, such as event bus, modular development, remote call of dynamic API, automatic API controller, etc. a complete set of specifications make it easieUTF-8...
Posted by ranjuvs on Sat, 09 Oct 2021 11:09:01 +0530
24 - online examination system database - class student information data operation (III) Project description With the vigorous development of distance education, the "online examination system", as an integral part of teaching, has also attracted the attention of distance education researchers.UTF-8...
Posted by DannyTip on Sun, 10 Oct 2021 10:19:55 +0530
Original website: Spring Data JPA -- Annotation -- Entity Association / entity annotation -- use / usage / tutorial_ CSDN blog brief introduction The entity Association annotation of JPA is rarely used in practice, because it will be automatically associated with other tables when reading and wUTF-8...
Posted by Koobi on Sun, 10 Oct 2021 12:50:25 +0530
Adapter mode Adapter idea: transform the interface of a class into another interface expected by the client, so that the two classes that could not work together due to interface mismatch can work together. In the vernacular, it means that a method that can only support one method can now suppoUTF-8...
Posted by AndrewBacca on Sun, 10 Oct 2021 18:32:17 +0530
1, Database 1. Overview database a warehouse used to store and manage data Classification: relational and non relational 2, SQL language 1. Overview It is a structured query language, which is specially used to operate databases. It is a standardized language that can operate various database UTF-8...
Posted by rodrigocaldeira on Mon, 11 Oct 2021 02:30:51 +0530