Chapter 3. Basic Concepts of Mapping
In the previous chapter, we talked about the nature of the Elasticsearch index. We started by looking at the basic concept and we discussed mapping. We talked about index flexibility and data denormalization. Finally, we discussed about inverted index and how the data is organized in an inverted index. In this chapter, we will continue to discuss mapping. We will first go through basic concepts. Then we'll focus on the relationship between mapping and relevant search results. Lastly, we will try to have a good grasp on schema-less. At the end of this chapter, we will have covered the following topics:
- What are metadata fields?
- How to control document metadata?
- What data types are?
- The relationship between mapping and getting relevant search results
- What is the meaning of schema-less?
