What is a Columnar Database? Columnar Databases Explained
This sql tutorial about a columnar database will walk you through what a columnar database is, what it does, and how it works.
Columnar databases organize data in columns in your database.
Such organization of data within your sql database leads to significant performance improvements in analytical workloads.
The purpose of a columnar database is to store all columns of a table separately, but group the values from that column together, enabling data acccess in columns as a group, not as a row.
Advantages of a columnar database include enhanced SQL query performance, better data compression, ease of scalability, and a wide choice of columnar storage formats.
Columnar database storage is ideal for analytical workloads, bigger data sets, or data warehousing since they usually search through fewer rows and process less data than their counterparts - row-based databases like MySQL Server, MariaDB Server, or Percona Server, or other relational database management systems.
If you're preparing for a SQL interview, make sure to educate yourself around what a columnar database is. It may be a frequent sql interview question so make sure to prepare for it.
Some sql interview questions and general database interview questions may also include questions like what is database normalization or what sql injection does to your database and application - watch some of our older videos on this topic.
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