What are the different types of indexing in databases?

What are the different types of indexing in databases?

There are several types of indexing in databases, including B-tree, hash, bitmap, and full-text indexing. Each serves different purposes.

Can you explain B-tree indexing?

B-tree indexing is a balanced tree data structure that maintains sorted data and allows searches, sequential access, insertions, and deletions in logarithmic time.

What about hash indexing?

Hash indexing uses a hash function to compute the address of data, making it very efficient for equality searches but not for range queries.

When should I use bitmap indexing?

Bitmap indexing is ideal for columns with a low cardinality, such as gender or boolean values, as it uses bit arrays to represent data.

Can you give me an example of full-text indexing?

Full-text indexing allows for efficient searching of text data by creating an index of words and their locations, enabling complex queries like phrase searches.