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Non-relational databases

Spreadsheets

workbook >> n worksheets >> m x n cells >> 1 data

A cell is the intersection of a row and column, where the columns are labeled with alphabetical characters and rows labeled numerically.

Formulas

Excel has functions, or predefined formulas to perform calculations on cell values.

NoSQL

NoSQL is an umbrella term for the different ways to store non-relational data and can be interpreted as "non-SQL", "non-relational" or "not only SQL".

These type of database systems can be categorized into 4 types.

Key-value databases 键值存储数据库

Graph databases 图形数据库

Columnar data 列存储数据库

Document data 文档型数据库

使用 Azure Cosmos DB 记录数据存储

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