Mysql (what is a relational database ?), Mysql database

Mysql (what is a relational database ?), Mysql database

Relational Database: a database built on a relational model.

LINK model:
How to process the entity structure when saving the entity (student) and entity attributes (student's student ID and name) in daily life to the database.

1. The data structure can be defined as similar data with the same structure. Is a two-dimensional table.
2. You can set the relationship between data. Links between entities.

Nosql (not only SQL non-relational database system) is like an array (key-value pair sequence), which corresponds to keys and values. Such as the sequence of mongoDB MemBase key-value pairs.