indexálású

Indexálású is a Hungarian term that translates to "indexed" or "having an index" in English. It is most commonly used in the context of data structures and computer science, referring to a method of organizing data to facilitate efficient retrieval. When data is indexálású, it means that an auxiliary data structure, known as an index, has been created to help locate specific pieces of information quickly without having to scan the entire dataset.

This concept is fundamental to database management systems, where indexes on tables allow for rapid querying of records. For example, if a database table contains information about many customers, an index on the customer ID field would allow a program to find a specific customer's record in a fraction of the time it would take to search through every record sequentially. Similarly, in file systems, indexes can be used to quickly locate files based on their names or other metadata.

The process of creating and maintaining an indexálású structure involves trade-offs. While indexes significantly speed up read operations (retrieval of data), they can slow down write operations (insertions, updates, and deletions) because the index itself needs to be updated along with the data. The choice of which fields or data attributes to make indexálású depends on the typical usage patterns and performance requirements of the system. Different types of indexes, such as B-trees or hash indexes, offer varying performance characteristics for different scenarios.