What is the relationship between SQL and relational database?

Question

The terms are used interchangeably, but there are differences. SQL is the query language that is used with relational databases. Relational databases and their management systems almost always use SQL as their underlying query language. NoSQL, or not only SQL, databases use SQL and other query languages.

What is the relation between SQL and relational databases?

Relational databases are also called SQL databases. SQL stands for Structured Query Language and it's the language relational databases are written in. SQL is used to execute queries, retrieve data, and edit data by updating, deleting, or creating new records.

Is SQL same as relational database?

SQL databases are known as relational databases, and have a table-based data structure, with a strict, predefined schema required. NoSQL databases, or non-relational databases, can be document based, graph databases, key-value pairs, or wide-column stores.

What is the relationship between SQL and relational algebra?

Relational algebra is a useful theoretical language that serves to define more complex languages. The second language we consider, Structured Query Language or SQL, is a practical language that allows a high-level expression of queries.

What is database relationship in SQL?

A relationship between two database tables presupposes that one of them has a foreign key that references the primary key of another table. Database entity—strictly speaking — is a person, place, thing, object, or any item about which data is stored in the database.

Expert · Answer