This is an article which is made to show an alternative for describing on how to solve problems where there is an error generated by SSH utility command which is executed to remote several servers. The error is ‘access denied’ as shown below :
user@hostname:/opt$ ssh - l firstname.lastname@example.org
In order to solve the problem, there are several steps which is taken as described below :
1. Check to content of /var/log/secure
DIA which is stands for Diagram Editor is a multi-purpose editor developed for editing numerous diagram such as ERD (Entity Relationship Diagram), UML or any other diagrams that can be saved and exported to other formats. Moreover, this editor is available in several operating system to be installed.
In this article, there will be steps explained to install DIA in Ubuntu 16.04 Linux Operating System. Below are those steps :
- First of all, the most general step is to update the operating system. The following syntax is the one which is used to perform it :
Below is the execution of the above command in a command prompt :
This is an article which is made to display some sort of explanation on creating an additional table for many to many relationship. As it has already known that creating additional table is necessary to describe a many to many relationship.
The scenario is described in detail as follows :
If there are many users whom are registered to a system where those users are also have lots or more than one roles in the system. Below is actually the scenario for creating the tables. In this context, the database which is used is MySQL. First of all, create the user table :
CREATE TABLE user
id INT NOT NULL AUTO_INCREMENT,
And after that, create the other table which is made to manage the roles available. It is shown as follows :