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Basic concepts of database data The symbolic record that describes things is called Data Including numbers, words, graphics, images, sounds, archives, etc Store in a unified format in the form of "record" surface Organize different records together to form a "table" It is used to store specific data data base A databas ...

I. compile and deploy Nginx 1.12 Installation configuration: [root@localhost ~]# groupadd nginx [root@localhost ~]# useradd -s /sbin/nologin -g nginx -M nginx [root@localhost ~]# systemctl stop firewalld [root@localhost ~]# systemctl disable firewalld #Turn off selinux #Server file descriptors, etc [root@localhost ~]# yum install gcc gcc-c++ ...

One code #include<iostream> using namespace std; int func(int n){ int result=0; for(int i=1;i<=n;i++){ result+=i; } return result; } int main(){ int arr[10]; arr[0]=0; arr[1]=1; for(int i=2;i<10;i++){ arr[i]=arr[i-1]+arr[i-2]; } cout<<"arr[9]"<<arr ...

After understanding the installation of Oracle 10g and 11g in win10, this article will cover the installation of Oracle 11g in CentOS 7. 1. Preconditions CentOS7 workstation installed jdk8 has been installed 2. Software download Baidu SkyDrive Links: https://pan.baidu.com/s/1u3Qjguim-7Z-4GoHDF8Pxg Extraction code: gwig 3. Co ...

Today, my colleague asked a question about the copy constructor. The class contains pointers. Let's talk about the copy constructor of c + +. The copy constructor of c + + is a kind of constructor, which is the initialization of class objects. Only one parameter of the copy constructor is the reference of this class. Note that the default con ...

1 Installation Planning ORACLE is installed on the new disk. The disk is mounted on u01. d01 and d02 are symbolic connections. The actual directory is under u01. parameter value Oracle base /d01/app/oracle Software location /d01/app/oracle/product/12102/dbhome_1 DATAFILEDESTINATION /d02/oradata RECOVERYAREADESTINATION /d02/fast_recov ...

MAC Builds Linux Cross Compiling Environment Preparation Run script Preparation Create a new case-sensitive hard disk partition with the disk tool of mac. Follow-up suggestions are made in this partition. Otherwise, there will be errors such as file missing. Running scripts requires gnu-sed, not ...

How to use Skywalking Agent? If you don't know what Skywalking agent is, Please click here to see Probe perhaps Here's a quick look at agent Since most of my services are JAVA services, here are three ways to choose from using agent in Java Three ways: Using the Officially Provided Basic Mirror Building agent packages into existing base images ...

1. Installation instructions1. Environmental description System Version Database Version Framework IP Address patch rhel6.9 11.2.0.4 RAC 192.168.3.2 29698727 rhel6.9 11.2.0.4 RAC 192.168.3.3 29698727 2. The software storage location is planned as follows: Software Storage location Grid /u01/11.2.0/grid Oracle /u01/app/oracle/p ...

Preface When we develop a kernel driver, we are actually developing a module of the kernel. Any module will have an initialization load function and an uninstall function. When are they called? What's the difference between calling modules in static link form and dynamic load form? This article will answer these questions. Any kernel module h ...