The difference between non-relational and relational databases

The difference between non-relational and relational databases

1. The latter is in tabular format, so the rows and columns, while the former is not suitable for storage in rows and columns of a data table, but is grouped together in large chunks.

2. The former supports fine-grained control over transaction atomicity and is easy to roll back transactions, while the latter can use transaction operations, but is incomparable to the former in terms of stability.

Advantages and disadvantages of non-relational and relational databases

Advantages of non-relational databases:

1. Performance

NOSQL is based on key-value pairs, which can be imagined as the correspondence between the primary key and value in the table, and does not require parsing by the SQL layer, so the performance is very high.

2. Scalability

It is also based on key-value pairs and there is no coupling between data, so it is very easy to expand horizontally.

Advantages of relational databases:

1. Complex queries

You can use SQL statements to easily perform very complex data queries between one table and multiple tables.

2. Transaction support

enables data access requirements with high security performance to be realized.

Recommended tutorial: "Database Tutorial"

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