17. The database processing system according to claim 3, wherein said pattern information comprises a second pattern for accessing a key range in case of a storage structure of a dense B tree structure when a key range sequential access is performed as an operation to the storage structure.
3. A database processing system including a basic data organization comprising: access parts means for including one of a plurality of access parts corresponding to an access method to the basic data organization; library parts means for including one of a plurality of library parts to generate a logic connection program necessary for accessing a data organization including the basic data organization as a storage structure; and optimizing means for creating a procedure for processing said database based on pattern information which combines said access parts means and said library parts means.