How to implement full-text database search

Question

I understand that full-text indexing and database searches can be enabled by a variety of off-the-shelf products. However, just out of academic curiosity, I wonder how these full-text indexes are actually implemented. I tried Google to get the results with a small answer. Please any feedback would be greatly appreciated.

Answer 1

Full-text search queries are currently supported by many databases as their primary function.

As for the implementation, I think your best bet is to check postgres full-text search , as you can

• find a lot of material about how it is implemented.
• actually change and reproduce using parsers (for example, they are optimized for a specific domain)

Wikipedia describes additional details and a concept:

• full-text indexes and you can also check
• open source and free full-text search engines , as usual you will find supporting documentation explaining the internal workings of these people (I heard good things about Lucene / Solr from this list)

Answer 2

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