Tag: database

Tech Tutorial: Learning MongoDB and Mongoose – Episode 05: Collections Explained

MongoDB documents hold data and often times that data belongs to specific categories or groups. For this purpose, MongoDB has what we call collections to group related documents together. In this video, we walk through the concept of collections in MongoDB.

Personal Recommendation (unpaid)
Programming and software development are awesome! Being that you are learning along with me, there is a really good chance you can make this a career. Based on my own life experience, let me suggest to you that you go get a Computer Science degree from Neumont College of Computer Science and kick your life into hyper-drive.

visit: https://www.neumont.edu/

Tech Tutorial: Learning MongoDB and Mongoose – Episode 04: Documents Explained

MongoDB is a document database. In this database, we will discuss the concept of a document within the MongoDB.

Personal Recommendation (unpaid)
Programming and software development are awesome! Being that you are learning along with me, there is a really good chance you can make this a career. Based on my own life experience, let me suggest to you that you go get a Computer Science degree from Neumont College of Computer Science and kick your life into hyper-drive.

visit: https://www.neumont.edu/

Tech Tutorial: Learning MongoDB and Mongoose – Episode 03: MacOS Installation

In this video, we will run through installing MongoDB on a MacOS machine.

Personal Recommendation (unpaid)
Programming and software development are awesome! Being that you are learning along with me, there is a really good chance you can make this a career. Based on my own life experience, let me suggest to you that you go get a Computer Science degree from Neumont College of Computer Science and kick your life into hyper-drive.

visit: https://www.neumont.edu/

Tech Tutorial: Learning MongoDB and Mongoose – Episode 02: Windows Installation

In this video, we will run through installing MongoDB on a Windows machine.

Personal Recommendation (unpaid)
Programming and software development are awesome! Being that you are learning along with me, there is a really good chance you can make this a career. Based on my own life experience, let me suggest to you that you go get a Computer Science degree from Neumont College of Computer Science and kick your life into hyper-drive.

visit: https://www.neumont.edu/

Tech Tutorial: Learning MongoDB and Mongoose – Episode 01: MongoDB Overview

Data is the lifeblood of the Internet and where there is data, there is a need for a place to store it so we can retrieve it and use it. Databases are the primary solution to this problem and there are many different types of databases designed to address different needs, use cases, and data types.

In modern web applications, you will mostly find either a relational database or a document database backing pretty much any system you run into. In this video, we introduce you to the MongoDB document database.

Personal Recommendation (unpaid)
Programming and software development are awesome! Being that you are learning along with me, there is a really good chance you can make this a career. Based on my own life experience, let me suggest to you that you go get a Computer Science degree from Neumont College of Computer Science and kick your life into hyper-drive.

visit: https://www.neumont.edu/

PostgreSQL Database: PG::ConnectionBad: FATAL: Peer authentication failed for user

If, when working on a Linux machine of the Ubuntu flavor and setting up a PostgreSQL 9.3 database, you run into the error ‘PG::ConnectionBad: FATAL: Peer authentication failed for user’ when trying to connect to a database from a web application (Rails, PHP, Node, etc.), you are more than likely running into local socket connection permissions within PostgreSQL. The most common fix for this error in a development or staging environment is to loosen the local permissions up a bit.

How To:
1. locate the file ‘/etc/postgresql/9.3/main/pg_hba.conf’ and open it using sudo (sudo nano /etc/postgresql/9.3/main/pg_hba.conf)
2. scroll down through the file (almost to the bottom) until you find the section that starts with ‘# Database administrative login by Unix domain socket
3. directly below that you will find ‘local all all peer’ change it to ‘local all all trust’
4. save and close the file
5. restart the PostgreSQL server (sudo service postgresql restart)