What are relational databases?
What are relational databases?
user
These are databases that use links to connect data.  These can be used to help identify data that has similar attributes or values.
assistant
What are the different relational databases that exist?
user
There are a variety of different types of relational databases. Some of the most common are:
assistant
MySQL and Postgres.
user
MySQL and Postgres are different types of relational databases.  I can explain more about each of these.
assistant
Yes, please do.
user
MySQL is a relational database that has a rapid development cycle, and it is especially popular with web developers.  Postgres is a distributed relational database that has superior performance when scaling to many users.  Some examples of applications that use MySQL include web servers, e-mail and news systems, and custom websites.  On the other hand, Postgres is more commonly used in finance and medical applications.
assistant
What can be learned from the data in relational databases?
user
Relational databases store data in the form of rows and columns.  This is a good method for efficiently analyzing and summarizing data that has relational links.  Since rows are created by a user, these databases are often used to store highly organized data.  For example, they are often used to store time-series data (information that shows a value at each point in time).  Here is an example of data that can be stored in a relational database:
assistant
Thanks. Can you also explain RDF?
user