This paper describes a new information storage system named VASS (Value Added Storage System) which is designed to manage uniformly various data stored in different type of information systems. The data managed in VASS are represented in uniform strucrure of single table with 5 columns, value, data-type, attribute, entity and period. VASS can manage not only conventional data, numerals, texts, tables, but also data of new type, images, voice, and videos. In spite of simple storage structure of VASS, it is very flexible to change information structure, i.e. and schema evolution with easy operations. VASS can accept data with various formats and expose data with various formats, i.e., we can use VASS as a data transformation system. VASS can also play a role of historical data management system because it manages data with valid period. It is useful for management of office documents, research documents, human affairs. VASS supports distributed data management.
This paper also discusses requirements for information sharing in network and the efficiency of VASS to attain them. Finally, overview of proto-type system of VASS is introduced.
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