Different Types of Databases: What Should You Know?

What came before the modern database
The early types of databases had rather minimal functionalities. At first, computer system lovers utilized what they called flat databases, which were generally plain text files. To see fundamental examples of databases of this type, see CSV (Comma Separated Values) files.
In 1960s, IBM introduced hierarchical databases. To solve this, a decade later Charles William Bachman III provided a more flexible design called network databases. By now network databases are virtually extinct: most business that used them leapt on the relational database bandwagon as quickly as it got here.
Relational vs. non-relational database
When looking at the contemporary types of databases, relational ones are clearly the most prominent. MySQL, PostgreSQL, or SQL Server are all terrific relational database examples.
When utilizing a relational database, you can save the data in tables that include columns and rows. Every row represents an individual record, and a column means a field with an information type assigned to it. Tables that include related info can be connected with main and foreign keys.
Now, in the current years, the non-relational databases have actually experienced some impressive rise. To work with non-tabular information, you need a non-relational database. Developers often refer to them as NoSQL databases: unlike relational ones, they do not support SQL inquiries.
There are 4 types of databases that do not use the relational model. Based upon your option, you can store your data as files, key-value sets, charts, or column families.
Document-oriented databases
In a document oriented database (which is often simply called a document shop), the data is kept in file collections, normally utilizing the JSON, XML, or BSON formats. One record can hold as much information as you require, in any information type (or types) you prefer– there are no restrictions. There is a certain internal structure within a single file, however, it can differ from one file to the other. You can nest them too.
Out of all the non-relational types of databases, file shops are the most popular. You can use a free Community version and a paid Enterprise one– both run on Windows, Linux, and macOS.
Key-value databases
As the name itself recommends, each record in this type of a non-relational database has a crucial and a worth. To a dictionary, the key can be utilized to recognized the worth. It actually is as simple as that. When the data theyre dealing with is not too intricate and speed is a concern, Developers mostly utilize key-value databases. For example, it is a terrific choice for storing configuration data.
The stored information is assigned no schema, and the database itself is much more light-weight when compared to a relational one. This likewise makes it among the finest types of databases for embedding. As of 2019, the most popular key-value database is Redis. It was likewise voted the most loved database in the StackOverflow annual study for three years in a row (2017, 2018, and 2019).
Chart databases
Utilizing a graph database, you have two kinds of information to manage. Nodes stand for the products in the database, and edges specify their relationships, also called charts. At the first glance, chart databases seem similar to the old-timey network databases, and yet there is one distinction. The network databases fell short in regards to abstraction, which is modelled far more expertly in graph databases like Neo4J or Dgraph.
Out of all the types of databases, this one is the finest option in cases when the relationships and their analysis is a priority. Nevertheless, chart databases have one clear drawback: while you do need an inquiry language to access the information, you can utilize neither SQL, nor any other widely adopted approach. The lack of standardization suggests most of the query languages can just be used in one or a few types of chart databases
Column store databases.
The last among the non-relational database types is called a column shop database, a column household database, or a wide column store. What makes them a great choice for handling big data is fast performance, effective data compression, and excellent scalability.
Rather of a schema discovered in relational databases, column store databases use the keyspace to keep the column households. Similarly to a table, a column family contains columns and rows. Yet, theres a clear difference: in this case, a column does not cover throughout all the rows. Instead, it is contained in a row, which also suggests various rows can have different columns. Apart from columns, each row likewise has an identifier, called a key, and every column holds a name, a value, and a timestamp. A couple of fine examples of databases utilizing the column family model are Cassandra, Vertica, and Druid.
Kinds of databases: whats next?
What it refers to is the latest generation of information storage services: ones that integrate the scalability of NoSQL with the ACID-compliance of relational databases. ACID stands for Atomicity, Consistency, Isolation, and Durability– the most important concepts for data storage.
According to The Economist, information is the brand-new oil– for that reason, its just natural the choice of database types constantly keeps growing. While relational databases are still the most popular, various cases do need various tools. We hope our in-depth guide has actually shed some light on this subject– after all, understanding different types of databases does makes it easier to make a much better choice.

By now network databases are practically extinct: most companies that utilized them jumped on the relational database bandwagon as soon as it got here.
Using a graph database, you have 2 types of information to deal with. At the first glance, graph databases appear comparable to the old-timey network databases, and yet there is one distinction. The network databases fell short in terms of abstraction, which is designed much more professionally in chart databases like Neo4J or Dgraph.
Rather of a schema discovered in relational databases, column store databases utilize the keyspace to save the column households.

According to the DB-Engines ranking, 4 of the most popular database management systems are of the relational type. They do use up the lions share of the marketplace– hence, theyre frequently also the only ones a beginner understands. There are numerous types of databases, each representing a different method of managing information storage.
Comprehending their differences and distinct selling points is crucial for making the best choice. We have prepared an in-depth guide on database types to help you understand your options as the back of your hand.