Relational data inquiring method for network management system

The invention discloses a relational data inquiring method for a network management system. In the method, a client side and a server side are utilized, wherein the server side comprises a storage space used for storing relational data objects; the storage space further internally comprises a storage module used for storing query condition expressions; a user can perform repeated inquiring of the relational data objects by virtue of calling the stored query condition expressions. The method has the beneficial effects that by virtue of an object-oriented mode, the inquiring mode is defined, the used mode is friendly and easy to understand, and the method can be directly used for inquiring similar classes without rewriting and resolving classes and SQL (Structured Query Language) sentences.