Деректер құрылымдарының қай түрлері дерекқорлардағы индекстерді жүзеге асыруда жиі қолданылады?

The following data structures are most commonly used in databases for implementing indexes:

• B-trees — balanced trees that provide efficient search, insertion, and deletion. They are used for indexing large volumes of data, especially in relational databases.

• B+ trees — a variant of B-trees where all values are stored in leaf nodes, which improves sequential access and range scanning.

• Hash tables — used for fast exact match searches. They are used in hash indexes.

• Bitmap indexes — used for columns with a small number of unique values, for example, for filtering.

• R-trees — used for indexing spatial data (geospatial data).

Example: In most SQL databases, B+-trees are used for regular key indexes because they work efficiently with disk operations and support range queries.