Inverted index data structure in Elasticsearch - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create an inverted index mapping terms to documents.

Elasticsearch

PUT /my_index/_doc/1 {
  "content": "apple banana cherry"
}

GET /my_index/_search {
  "query": {
    "match": {
      "content": "[1]"
    }
  }
}

Drag options to blanks, or click blank then click option'

Aapple

Bfruit

Corange

Dvegetable

Attempts:

3 left

💡 Hint

Common Mistakes

Searching for a word not in the document returns no results.

Using unrelated terms like 'fruit' or 'vegetable' won't match.

The inverted index maps the term apple to documents containing it. Searching for apple returns matching documents.

2fill in blank

medium

Complete the query to find documents containing the term 'banana'.

Elasticsearch

GET /my_index/_search {
  "query": {
    "match": {
      "content": "[1]"
    }
  }
}

Drag options to blanks, or click blank then click option'

Acherry

Bbanana

Capple

Dgrape

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing terms not present in the documents.

Misspelling the term.

Searching for banana returns documents containing that term, using the inverted index.

3fill in blank

hard

Fix the error in the query to correctly search for 'cherry'.

Elasticsearch

GET /my_index/_search {
  "query": {
    "match": {
      "content": [1]
    }
  }
}

Drag options to blanks, or click blank then click option'

A'cherry'

Bcherry

C"cherry"

D{cherry}

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the search term causes syntax errors.

Using single quotes instead of double quotes.

The term must be a string in quotes. Using "cherry" is correct syntax for Elasticsearch queries.

4fill in blank

hard

Fill both blanks to create a query that searches for documents containing 'apple' or 'cherry'.

Elasticsearch

GET /my_index/_search {
  "query": {
    "bool": {
      "should": [
        { "match": { "content": [1] } },
        { "match": { "content": [2] } }
      ]
    }
  }
}

Drag options to blanks, or click blank then click option'

A"apple"

B"banana"

C"cherry"

D"date"

Attempts:

3 left

💡 Hint

Common Mistakes

Using terms not present in the documents.

Not quoting the terms properly.

The bool query with should matches documents containing either apple or cherry.

5fill in blank

hard

Fill all three blanks to create a filtered query that searches for 'banana' and filters documents with 'status' equal to 'active'.

Elasticsearch

GET /my_index/_search {
  "query": {
    "bool": {
      "must": { "match": { "content": [1] } },
      "filter": { "term": { "status": [2] } }
    }
  },
  "_source": [3]
}

Drag options to blanks, or click blank then click option'

A"banana"

B"active"

C["content", "status"]

D["content"]

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting strings properly.

Using wrong field names or values.

Returning all fields instead of limiting with _source.

The query matches documents containing banana and filters those with status equal to active. The _source field limits returned fields to content and status.