What is index and how it is works

An index, in the context of data management and databases, is a data structure used to optimize the retrieval of records from a dataset. It works by creating a quick and efficient way to look up and access specific data within a large dataset. Indexes are commonly used in relational databases, search engines, file systems, and other systems that involve data retrieval.
Do this for pages you do want to be indexed.
      export default {
  head() {
    return {
      meta: [
        {
          hid: 'robots',
          name: 'robots',
          content: 'index',
        },
      ],
    }
  },
}
Do this for pages you do not want to be indexed.
      export default {
  head() {
    return {
      meta: [
        {
          hid: 'robots',
          name: 'robots',
          content: 'noindex',
        },
      ],
    }
  },
}
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