What does scalable mean in database?

What are database scales?

Scale is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a precision of 5 and a scale of 2. In SQL Server, the default maximum precision of numeric and decimal data types is 38. In earlier versions of SQL Server, the default maximum is 28.

What does it mean when a system is scalable?

Scalability is the measure of a system's ability to increase or decrease in performance and cost in response to changes in application and system processing demands.

How do you make a scalable database?

Horizontal Scaling1Adding read replicas to handle Read-Heavy workloads.2Reading from the cache before hitting the primary DB to reduce database load.3Sharding your database into multiple servers to improve both read and write performance.Designing Highly Scalable Database Architectures - Simple Talk

Why is scalability important for a database?

You can accommodate for changes in demand As the name suggests, a scalable database means your database can grow at the same pace as your business. That means you're never left in a situation where you lack the resources to operate at your full potential.