lekérdezésoptimalizáció
Lékerdezésoptimalizálás, or query optimization, is a fundamental process in database management systems (DBMS) that aims to improve the efficiency of executing queries. Its primary goal is to minimize resource consumption, such as CPU time, memory usage, and input/output operations, thereby achieving faster response times and better overall system performance.
In the context of relational databases, query optimization involves analyzing a high-level structured query language (SQL)
The process relies heavily on cost-based algorithms, which use metadata and statistical information about the database
Effective query optimization is vital for large-scale and complex databases, where inefficient execution can significantly impact
Overall, query optimization is a key component in ensuring that database systems operate efficiently, reliably, and