Módszerek összehasonlítása

	Lekérdezés-optimalizálás	Adatbázis-normalizálás	Indexelési stratégia
Tudományterület	Információs rendszerek	Információs rendszerek	Információs rendszerek
Módszercsalád	Process / pipeline	Process / pipeline	Process / pipeline
Keletkezés éve	1979	1970	1972
Megalkotó	IBM San Jose Research Laboratory	Edgar F. Codd	Rudolf Bayer and Edward M. McCreight
Típus	Database optimization technique	Data organization methodology	Database optimization technique
Alapmű	Jarke, M., & Koch, J. (1984). Query optimization in database systems. ACM Computing Surveys, 16(2), 111-152.	Codd, E. F. (1970). A relational model of data for large shared data banks. Communications of the ACM, 13(6), 377-387.	Bayer, R., & McCreight, E. (1972). Organization and maintenance of large ordered indices. Acta Informatica, 1(3), 173-189.
Alternatív nevek	—	—	index design, indexing
Kapcsolódó	2	1	1
Összefoglaló	Query optimization is a critical process in database management that transforms high-level SQL queries into efficient execution plans. Developed systematically by IBM researchers in the late 1970s, it aims to minimize execution time, disk I/O, and resource consumption by selecting the most effective access paths and join strategies.	Database normalization is a systematic process for organizing relational database schemas to eliminate redundancy and enforce data integrity. Introduced by Edgar Codd in 1970-1971 as part of the relational database model, it defines a series of normal forms (1NF through BCNF) that progressively eliminate different types of data anomalies.	Indexing strategy is the practice of systematically designing database indexes to accelerate query performance. Developed following Bayer and McCreight's foundational B-tree work in 1972, effective indexing requires analyzing query patterns, choosing appropriate index structures, and maintaining index health as data evolves.