Advanced web application design demands the concern of the customers to be used for describing the inherent semantics in an integrated way. In this paper we have proposed a graph-based aspect-oriented conceptual data model, Semantic Graph Data Model (SGDM), for web based application. This not only offers a pictorial view with better understandability but also provides the procedure for describing the semantic resources. SGDM represents them in a structured manner with reasoning through aspect orientation. The proposed model also supports the automatic domain model development for similar business problems by effective domain-knowledge reuse. Moreover, SGDM supports the object-oriented paradigm and also flexible to represent semi-structured as well as hypertext data through a multilayered graph structure. The Product Specific Model (PSM) SQL: 2003 implementation of our proposed model SGDM is being done through GME tool. © 2011 IEEE.