What is the syntax for updating a document in a TinyDB database based on a specific criteria?

TinyDB - Quiz(MCQ)

updateDocument({field1: value1}, {field2: value2})

modifyDocument({field1: value1}, {field2: value2})

changeDocument({field1: value1}, {field2: value2})

updateDocuments({field1: value1}, {field2: value2})

Correct Answer : updateDocument({field1: value1}, {field2: value2})

Explanation : To update a document in a TinyDB database based on a specific criteria, developers can use the updateDocument() function and pass in two dictionary objects – one containing the search criteria and the other containing the updated data fields and their values.

Recently Updated in TinyDB Questions

Which of the following is an example of a TinyDB query for retrieving documents where multiple data fields meet certain criteria?

{“field1 = value1 or field2 = value2”}

{“field1 = value1 and field2 = value2”}

{“field1 = value1 and field2 = value2 or field3 = value3”}

{“field1 = value1 or field2 = value2 and field3 = value3”}

Correct Answer : {“field1 = value1 and field2 = value2”}

Explaination : To retrieve documents where multiple data fields meet certain criteria, developers can use the {“field1 = value1 and field2 = value2”} syntax in a TinyDB query.

Which of the following is an example of a TinyDB query for retrieving documents where multiple data fields meet at least one of several possible criteria?

{“field1 = value1 or field2 = value2”}

{“field1 = value1 and field2 = value2”}

{“field1 = value1 and field2 = value2 or field3 = value3”}

{“field1 = value1 or field2 = value2 and field3 = value3”}

Correct Answer : {“field1 = value1 or field2 = value2”}

Explaination : To retrieve documents where multiple data fields meet at least one of several possible criteria, developers can use the {“field1 = value1 or field2 = value2”} syntax in a TinyDB query.

Which of the following is an example of a TinyDB query for retrieving documents where a specific data field is not null?

{“field1 = null”}

{“field1 is null”}

{“field1 != null”}

{“field1 is not null”}

Correct Answer : {“field1 is not null”}

Explaination : To retrieve documents where a specific data field is not null, developers can use the {“field1 is not null”} syntax in a TinyDB query.