I'm working on a web project with Django, and using postgresql for storing informations. I'd like to know what is the maximum number of users can we create in postgresql ?
There's a difference between Django application users and Postgresql database users. If you intend to create users in your django application, and you are using Postgresql as your django backend database, then for each user you will create will be represented as a row in a postgresql table - therefore, practically speaking, you can create as many users as you'd like and there's no limit. I believe the most commonly used authentication models are defined in django.contrib.auth - there you can find django models for users and groups. In postgresql itself you'd normally have very few database users defined - in all likelihood just one - the user you connect with from Django.
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Can I implement a student portal a mobile based application,using sqflite flutter in which teachers can access student table records and similarly the admin can access every table,it means a kind of relational database between every entity?
Sqflite is a database stored on the users individual phone if you want to do something like a student portal you need a real time database which will ensure that others users will be in sync, you can do this by creating a backend application using node.js,java or python and connect it with a relational database such as postgress, mysql and then connect it to your flutter application via http request, another alternatives is to use firebase
I have created a Flask application using SQLAlchemy as the ORM. I also use flask-login to manage my different users. I want to connect to a PostgreSQL database with different flask users that correspond to different postgres users that have different privileges.
They should be able to be logged in at the same time and make different queries with their individual rights. I tried all kinds of pooling methods by SQLAlchemy, but could not manage to achieve what I want. It always led to an arbitrary association of the open connections to the different users. What is the best way to do this, i.e. to achieve this kind of "session-persistent" database connection behaviour?
Thanks in advance for any help!
I am trying to create a users model for my application sign in with Mongoose / MongoDB. Based on how I see it when I deploy to Atlas or Mlab, it auto generates a users collection but for the purpose of database authentication - like this user has read access, write access, admin, etc. What is the convention for creating application users? Do I also use the same users collection but add additional schema properties or do I make a different one altogether like app_users. Thanks!
Are you using the test or admin database? You should create a new database for your application. When you create a new database it will not come with any predefined collections or such, so you can start blank (which is what I assume you want?).
You don't need to explicitly create a new database. Just point your driver to a database name you want for your app. Or in the mongo CLI type use myAppDb and you can start adding collections there.
More details here https://docs.mongodb.com/manual/mongo/#working-with-the-mongo-shell
I have an application where security and data theft are primary concerns. I am using Postgres 9.4 on RDS by AWS.
I have several users who need read permission on the db. I know that these users can essentially write a script to scrape all the data from the db but is there a way to deny them from using the pg_dump utility.
I am not sure what code examples I can provide for the same.
Is there any alternate strategy to use here? To share db data with developers without allowing them to take dumps of the same?
Previously I was using databases from BaaS (Backend as a Service) - Parse, Backendless, Firebase - this services has everything I need to manage users of my webapps: tokens handling, owner policies etc.
How do I manage webapp users in own database? (PostgreSQL 9.4)
Is it suppose to be just a regular table, which will contain columns "login", "password" etc. or there are specific tools to implement that?
How should I handle tokens? Should I store it somehow in database, or tokens suppose to be stored in my server and are not bind to database at all?
How do I implement owner policies? Are there some specific tools in Postgres for this, or I should simply create the column "ownerId" in each table and use it as Foreign Key?
If you know good articles on this topic - please, post a links - it will be very helpful!
I would search for it in google, but I've found nothing but articles about database users handling. I assume, this is not what I'm looking for.
Regular table or postgrsql ROLE system
Usually tokens are on application side
Postgres 9.5 have row security policies but you can implement owner policy by yourself. Hard to say what database features you have to use without
assumptions of the project.