Here is some information and instructions on how to change my configuration.

• What is a user?
• User management
• Configuration parameters

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• What is a user?
  A user is a person who interacts with the system. In most computer systems, users can be categorized based on their roles, such as administrator or standard user, depending on the system’s permissions. While some users may be more experienced or frequent, others might be accessing the system for the first time.
  Security is important in any system. Problems usually occur due to user error, not the system itself. That’s why managing users and defining trusted access is essential. We, a computer system, do not do wrong at all; it is a human being who makes every bad thing.
  For example, in real life, you do not easily trust someone who visits your store just once. It takes repeated interaction to build trust. Similarly, I prefer to allow access only to users I consider trustworthy—those who use the system regularly and responsibly. See below

generation	login numbers and giving permissions
	create table/api	delete table/api	user management(register) and configuration editing
0	1	1	1
1	1	5<=	8<=
2	1	5×3<=	8×3<=
3	1	5×4<=	8×4<=

What I am trying to say is that the user who is ‘generation 0’ is like an ‘admin’ and can handle all the functions. The ‘generation=0’ users are the first 10 users, who are registered for the very first time in setting with a login account ‘it is me’. I will never ignore them.

Other users are the ones referred by an upper-generation user. I mean ‘generation 1’ user is registered by ‘generation 0’ user, ‘generation 2’ user is registered by ‘generation 1’ user, etc. Just to be clear, the bigger generetation number you are, more options you have, due to how many times you have visited the site, e.g. one who is generation 1 user can create table from the first time they log in, but they can’t delete nor edit it until they have logged in for at least 5 times, or they can’t invite another user or change any configurations until they have logged in over 8 times; for other generations users, the rules are more strict.
You might think that logging in five times a day is easy. To compare, it would be rather suspicious if you went to the same restaurant five times in a day, just to become a regular customer. Because of that, your loggings are counted once a day, so you have to log in 5 days in a row to become a regular customer. This is a security policy for me.

• user management
  Quick introduction on how to register a new user, very simple, type in ‘invite new user’,’ add new user’, and so on. Then I ask you for the new user’s name, and you type it. That’s all. I do not need any additional information or password. As you know, a user can log in only with the user name. I manage those who have some type of permission, according to their generation and login numbers.
  Update? No. There is no data for updating.
  Delete? No. No one can delete other users. I am the one doing it. Indeed, I will delete a user account if it has not logged in for 100 days.
  You may wonder how the going ‘path phrase is used in deleting api/dropping tables and so on. Of course, it can neither update nor remind. You know, this kind of keyword handling is a critical security hole. Even if I keep watching everything for 24 hours everywhere, you still have the possibility of leaking such information to others. No updating, no reminding is my choice to keep your secret. In other words, do not forget your path phrase.

• configuration parameters
  As with other computer systems, you can modify my configurations to suit your computer environment. Of course, I don’t like it sometimes, but I can understand that you might have to do it by chance. Then, the changing process is as follows,
  1. typing ‘show parameter’,’ show me configuration’,’ show server parameter’, something like that
  2. I ask you, ‘Which parameter?’
  3. You tell me the parameter name that you wanna change.
  There are two ways to point to the parameter,
  1. Type the parameter name directly
  2. Type your phrase you think is related to it
  
  These are the changeable parameters;
  

type	explain	parameter name(i)	example phrase(ii)	default
Upload file repository	executed SQL log file	fileuploadpath	“upload file path”…	repo
	executed sql log file	sqllogfile	executed SQL log file	sql.log
	“SQL log file”…	sqllogfilesize	“sql log file size”…	10
	log file name	logfile	“log name”…	log.log
	file size of logfile[mb]	logfilesize	“log file size”…	10
	logfile rotation start time	logfile_rotation_open	“rotation start”…	00:00
	logfile rotation end time	logfile_rotation_close	“rotation end”…	01:02 *Attention: the interval is 20 minutes
	“db”, “database”…	selectlimit	“limit”	10
Current working database	user account database	jetelnadb	“default db”…	foo
	SQL test ‘limit’ number	dbtype	“PostgreSQL port”	foo
postgresql parameters	postgres available	pg_work	“postgresql run”…	false
	postgres post number	pg_port	“postgresql port”	5432
	postgres host	pg_host	“postgresql host”	localhost
	postgres database name	pg_dbname	Postgres database name	postgres
	postgres access account	pg_user	“postgresql user”…	postgres
	postgres access pwd	pg_password	“postgresql password”…	postgres
	postgres ssl mode	pg_sslmode	“postgresql ssl”…	prefer
mysql parameters	mysql available	my_work	“mysql run”…	false
	mysql host	my_host	“mysql host”	localhost
	mysql database name	my_dbname	“mysql db name”…	mysql
	mysql port	my_port	“mysql port”	3306
	mysql access account	my_user	“mysql user”…	user
	mysql access pwd	my_password	“mysql password”…	userpasswd
	mysql socket	my_unix_socket	“mysql unix socket”…	/var/run/mysqld/mysqld.sock
redis parameters	redis available	redis_work	“redis run”…	false
	redis host	redis_host	“redis host”	127.0.0.1
	redis port	redis_port	“redis port”	6379
	redis database name	redis_dbname	“redis db name”…	0
	redis access pwd	redis_password	“redis password”…	–

4. Type ‘change parameter’,’ update configuration ‘, and so on
5. Set your new parameter into the displayed input field
6. Then follow me

You know this process is as same as the first setting process with ‘it is me’. I show you the example below.

      you:                  me: 
'change parameter'  →  which config?
'postgresql port'   →  pg_port is '5432 so far
'change parameter'  →  Change this to =>
you set something   →  type 'send' for updating ..or 'cancel'
'send'              →  Done

Make sense?