G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 17/30 (2006.01)
Patent
CA 2327948
The present invention relates to a system and method for accessing non- relational data stored in records on a host system by a relational access method. The implementation of a relational interface component allows data transformation and type conversion and gives a relational interface to non-relational data. An integrated mapping component is used to define the relational structure of non-relational records or data. This relational structure is used by the application program or data base request. The mapping component allows to define columns with their characteristic (i.e. byte offset, data type, length). The definitions can be grouped in maps equivalent with a relational table and views represents a subset of the columns defined in a map. It can be defined multiple different maps and views for one record. The information of the maps, columns and views are stored in one repository. The inventive interface component is using the definitions stored in the repository to access the non-relational data and splits the records. Preferably based on the SQL language non-relational data like VSAM data can be accessed from any program using the relational interface component. The original no- relational data remain unchanged and older programs works without changes. The present invention gives new possibilities for host based programs using non-relational access methods and supports the integration transition or migration into relational environment.
Franzki Ingo
Mild Whilhelm
International Business Machines Corporation
Saunders Raymond H.
LandOfFree
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