Indexeket

Indexeket is the accusative plural form of indexek in Hungarian; the nominative plural is indexek. The term appears in linguistic discussions and, in computing, refers to multiple indexes as objects of action or description. In general, an index is a data structure or mechanism that enables faster retrieval of data items by providing quick references to their locations.

Database indexes are a central application. They are created on one or more columns to speed up queries. Common implementations include B-tree indexes, which support range queries, and hash indexes, which provide fast exact-lookups. Indexes can be unique or non-unique and may be composite, spanning several columns. They require additional storage and maintenance, since data modifications can necessitate updating affected indexes and may impact write performance. Effective indexing involves selecting appropriate columns, considering covering or included columns, and balancing the workload of reads against updates.

In information retrieval and search engines, inverted indexes are widely used. An inverted index maps terms to the documents that contain them, enabling fast full-text search. Modern systems often combine inverted indexes with ranking techniques such as TF-IDF or neural models to order results by relevance.

Other domains use specialized indexes, such as spatial indexes (for geographic data), or columnar and full-text indexes for large document collections. Across disciplines, the core principle is the same: an index trades additional storage and maintenance for faster access to data. Choosing what to index depends on observed query patterns, data update frequency, and desired response times, with regular monitoring to maintain performance.