Zusammenfassung der Ressource
Query Processing
- Parsing
- checks syntax, verifies relation
- Optimization
- determines the most efficient way to
execute a given query by considering the
possible query plans
- Translation
- Translate the query into its internal form
- Further, translates into relational algebra.
- Evaluation
- In this, the query evaluation engine
takes a query evaluation plan,
executes that plan and returns the
answer to the query.