Database, table, column, row

Database, non-homogeneous data should be placed in a different database
1 Easy to manage individual data categories
2 Avoiding naming conflicts
3 Higher security
Table (table): The relational database of [relations] refers to tables. Different goods have to be placed in their respective cargo racks, which are called "Tables" (table). Different tables are optimized for space based on the data they are placed in, and it is convenient to find them.
Columns (column), Fields (field), row tuples
Format data in tables: Even the introduction of automatic recognition devices is easy to identify.

There can be multiple databases on an instance.
database instance, which can be understood as multiple database services installed on a single computer.
MSSQLSERVER is a relational database. In a relational database, another name for a table is called a relationship.

Database, table, column, row