What is PostgreSQL and what are some alternative relational databases?
its an open source relational database management system , MySQL, oracle are examples of other relational databases
What are some advantages of learning a relational database?
its all uses a similar language and They can store and modify data in a way that makes data corruption as unlikely as possible
What is one way to see if PostgreSQL is running?
with the top command
What is a database schema?
A collection of tables is called a schema.
What is a table?
A table is a list of rows each having the same set of attributes
What is a row?
represents a single, implicitly structured data item in a table.