Question

The code snippet below is used to read data from an XML file into a table. Which XML structure is not supported by the statement? LOAD XML LOCAL INFILE ' ' INTO TABLE cars ROWS IDENTIFIED BY ;

a) Attribute-centric
b) Element-centric
c) Namespace-centric
d) Mixed content-centric

Answer 1

The 'LOAD XML LOCAL INFILE' statement in MySQL does not support mixed content-centric XML structures because they do not provide a clear mapping of elements to table columns.

Step-by-step explanation:

When using LOAD XML LOCAL INFILE to import data into a MySQL table, it only supports a certain structure of XML documents. The XML structure not supported by this statement is d) Mixed content-centric. This is because LOAD XML expects each XML element to map directly to a table column, and mixed content - where element text content and child elements are interspersed - does not fit this straightforward mapping.

The attribute-centric (a), element-centric (b), and namespace-centric (c) structures are generally supported as they provide a clearer mapping of elements to the columns of the table. However, mixed content does not align with the required structure that LOAD XML expects, thereby leading to potential issues during the import process.