The distinctive feature of relational databases compared to non-relational ones is: - storing data in tables as columns and rows - the ability to explicitly type data: string, integer, boolean, etc. - access rights distribution function for accounts - using primary and foreign keys to establish relationships - having an indexing function to speed up data search

A distinctive feature of relational databases is the use of tables with a clearly defined structure — rows and columns, where each column has a specific data type (e.g., string, number, boolean). This ensures strict typing and data integrity.

Relational DBs also support primary and foreign keys, which allow building relationships between tables and ensure referential integrity.

The presence of indexes speeds up data search and retrieval.

The access rights distribution function allows controlling who can perform what operations.

Together, these characteristics distinguish relational databases from non-relational ones, which may store data in more flexible formats (e.g., documents, key-value) and do not always support strict schemas and relationships.