To query a user's mobile phone and WeChat number, the following SQL statement can be used.

PostgreSQL is powerful and widely compatible, supporting the complete SQL standard, including transactions, foreign keys, ...

ABSTRACT: This research aims to reactivate object-oriented databases using intelligent tools to improve performance and accuracy in modern work environments that require processing large amounts of ...

This research aims to reactivate object-oriented databases using intelligent tools to improve performance and accuracy in modern work environments that require processing large amounts of complex data ...

Object–relational mapping (ORM) is a technique with which records from relational databases are mapped to objects using an object-relational mapper in the programming language in which they are used.

Abstract: Object-relational databases have emerged to improve relational ones by adding properties of object-oriented approach such as references, polymorphism, inheritance, etc. However, these ...

Abstract: Object databases and object relational databases are both widely used in industries. The major differences are mainly the level of encapsulation and the language supported by individual ...