... conventional data and social networking data is that conventional data focuses on entities and attributes, whereas social networking data focuses on entities and their inter-relationships Therefore, the ... models, query languages and access methods not offer adequate and native support for the representation, management, querying and especially inter-operability of online social networking data To ... language SNGQL designed for the new graph database system The graphical formalism in this thesis for online social networking data offers high expressibility and adequate modeling power ii Acknowledgements...