Object-relational database
（重定向自ORDBMS）
![Example of an object-oriented database model.[1]](/Images/godic/202501/31/Object-Oriented_Model.svg3942.png")
An object-relational database (ORD), or object-relational database management system (ORDBMS), is a database management system (DBMS) similar to a relational database, but with an object-oriented database model: objects, classes and inheritance are directly supported in database schemas and in the query language. In addition, just as with pure relational systems, it supports extension of the data model with custom data-types and methods.