Introduction There can be quite a bit of confusion about non relational databases especially since the term “non relational database” doesn’t really define what it is, but what it isn’t. We’ll quickly cover what a non relational database is and then we’ll go over some of the technologies and how it’s different and consider some … Continued
Introduction In this article we’ll talk about the $lookup in MongoDB. We’ll talk about what it does and how to execute one. We’ll go over an example in the MongoDB Shell so you can gain a concrete understanding. Prerequisites You should have MongoDB installed on your system. You can follow along using the MongoDB Shell … Continued
Introduction In this article we’ll show you how to show a list of the collections in a database in MongoDB. There are different ways to do this but we’ll first show you the quick and easy way before we show you the other. We’ll show how to do it in the MongoDB Shell because that … Continued
Introduction The purpose of this article is to show you the simplest way to remove an index in MongoDB. We’ll first demo how to do in the MongoDB Shell because the syntax is almost exactly the same across the long list of drivers including NodeJS, PHP, Python. We will also show how to remove it … Continued
Introduction In this article we’ll look at finding out the size of your MongoDB collection. Whether you’re looking for the number of documents in the collection or the amount of storage the collection is taking up we will show you how to get both in a simple easy way. We’ll first show you how to … Continued
Introduction In this article we will review the updateOne function in MongoDB. We will start by reviewing its function definition and then showing demonstration using JavaScript. we will talk about exactly what the function and went to apply. Prerequisites You should have MongoDB installed on your system. What updateOne Does? The updateOne() function updates the … Continued
Introduction If you do any type of development or database admin you know the feeling of staring at a cryptic error message and having no idea where to start debugging. Just looking at that cryptic error message can be intimidating. Our goal for this article is to take some of that fear away by explaining … Continued
Introduction However much we’d like to avoid it there are times when a DBA has to perform a query on the production database. When you do this you want to make sure that the queries are efficient and don’t hog the system resources which could cause problems for your users. In this article we’re gonna … Continued
Introduction Database administrators (DBAs) manage database management systems (DBMSs) and use them to deploy and maintain databases. Today’s organizations use databases to store profiles of customers, product inventories, sales transactions, and much more. Even so, the area of database administration is often misunderstood. That could be the main reason why it’s not practiced the same … Continued
Introduction A sustainable database and database management system (DBMS) must have scalability elasticity availability concepts. Since databases are business investments, it makes sense for organizations to want to grasp essential database concepts so they can make informed purchasing decisions. Scalability is the ability of a database or DBMS to handle an increase or decrease of … Continued
