Relational Access Method Supporting Nested Data View
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
This invention relates to a method for efficient access and management of a hierarchically nested view of data in a relational data base system. A single record retrieval contains enough information to determine if the record satisfies the hierarchically nested view. The method steps include (a) storing data in single relations in which each record includes an environment field and other representations field, and (b) accessing data relationally such that each retrieved record satisfies the additional criteria of (1) its environmental field which must be contained in an environmental list, and (2) the other representations field which is not contained in the environmental list, whereby the data being retrieved constitutes the first representation on the path from the query node to the root of a representational tree.