Niemi, Timo

name

• Niemi, Timo

Authored works

• A comparative study of two formal specification methods in the data base environment
• A form-based user interface for NF[sup 2] relations and its implementation strategy
• A formal description of data structures based on the flat file and hierarchical data models
• A meta-information approach to relational database representation and manipulation based on Prolog
• A relational algebra for manipulating relations and their schemas together
• A seven-tuple representation for hierarchical data structures
• A straightforward formalization of the relational model
• A systematic specification schema based on attribute grammars for multi-level database applications
• Conversion of flat files and hierarchical data bases
• Deductive database queries based on transitive relationships and entity types
• Definition of the hierarchical relation and its projection
• Formal restructuring functions for hierarchical data bases
• Kahden formaalin semantiikan määrittelymenetelmän vertaaminen tiedonhallintaympäristössä
• Operation-oriented query language approach for recursive queries
• Prolog-based implementation of a straightforward NF[sup 2] relational query interface
• Query language approach based on application specific concepts
• Specification of a query language by the attribute method
• Specification of data restructuring software based on the attribute method
• Taloudellis-hallinnollisten sovellutusten ohjelmistojen jäsentäminen
• The rule-based prototype implementation for the operation-oriented recursive query language approach and its integration with relational databases
• The specification of data reformatting in data conversion
• Tiedostojen ja ohjelmiston suunnittelu konstruktiivisessa systemoinnissa
• Yksinkertaiseen ja hierarkkiseen tietorakennemalliin perustuvien tietorakenteiden formaali esittäminen ja niiden analysointi- ja muutosfunktioiden määrittely
• Yksinkertaiseen ja hierarkkiseen tietorakennemalliin perustuvien tietorakenteiden muuttamisen semantiikan määrittely
• Yksinkertaisen ja hierarkkisen tietorakennemallin mukaisten tietorakenteiden muuttamiseen liittyvän semantiikan määrittely attribuuttitekniikalla

Works contributed to

• Advanced retrieval from heterogeneous fact databases : integration of data retrieval, conversion, aggregation and deductive techniques
• Advanced tools for data base management systems
• Advanced tools for the database administrator
• Annual report : 1983-84
• Deductive information retrieval based on classifications
• Entity-based query construction for relational database access
• General value conversion and aggregation operations : definition and integration with relational, entity-based and deductive data retrieval techniques
• Hajautettujen faktatietokantojen käytön yksinkertaistaminen : ongelmia ja lähestymistapoja
• The implementation of the visual query language CQL for transitive computation

Works about Niemi, Timo