MC Which of the following expressions correctly selects the fifth student of the faculty of economics using XPath? University/faculty[ name = 'Economy']/student[4] incorrect doc("university.xml")/university/faculty[name = 'Economy']/student[5] correct doc("university.xml")/university/faculty[name = 'Economy']/student[4] incorrect University/faculty[name = 'Economy']/student[5] incorrect
MC Which statement is CORRECT? All XML tags and attributes association with the same prefix belong to the same namespace and should be unique. correct When compared against XML, both JSON and YAML do not provide support for ordered elements such as arrays. incorrect A key difference between XML data and relational data is that relational data can be nested whereas XML data cannot be nested. incorrect REST is communication agnostic and is based on an official standard. incorrect
MC Given following Xquery:
FOR $supplier IN doc("winesuppliers.xml")/supplier
WHERE $supplier/address/city = "San Francisco"
AND $supplier/supstatus>40
RETURN {$supplier/name, $supplier/address}
Which of these statements is not correct? This query returns all suppliers in San Francisco whose status exceeds 40. incorrect The '$' is used to refer to the XML attributes. correct This query makes use of XPath expression to navigate through the document. incorrect This query is equivalent to the following SQL query:
SELECT SUPNAME, SUPADDRESS
FROM SUPPLIER
WHERE SUPCITY='San Fransisco' AND SUPSTATUS>40 incorrect
MC Which statement is CORRECT? In partial shredding of XML documents, the user should always manually determine the optimal degree of shredding. incorrect The document-oriented approach for storing XML documents is especially well suited for storing dynamic content that is frequently updated. incorrect A key advantage of the document-oriented approach to storing XML documents is the integration with traditional relational SQL query processing. incorrect In the data-oriented approach to storing XML documents, the entire XML document can be reconstructed by using SQL joins. correct
MC Which statement is NOT CORRECT? To avoid name conflicts, XML has introduced the concept of a namespace. incorrect Within a single XML document, only one namespace can be defined and used. correct Namespaces introduce prefixes to XML elements which typically refer to a URI (uniform resource identifier). incorrect All XML tags and attributes association with the same prefix belong to the same namespace and should be unique. incorrect
MC Which statement is NOT CORRECT? Neither YAML nor JSON have a good equivalent to XPath. incorrect In partial shredding of XML documents, the user should always manually determine the optimal degree of shredding. correct A key difference between XML data and relational data is that relational data assumes atomic data types whereas XML data can consist of aggregated types. incorrect XML Schema allows to specify minimum and maximum cardinalities. incorrect
MC Which statement is NOT CORRECT? XQuery allows to make use of both the document structure and its content. incorrect XQuery uses XPath path expressions to navigate through the document. incorrect The end results of XQuery can be sorted. incorrect XQuery does not allow to join information from different XML documents. correct
MC Which of the following statements about DTD is correct? In XML, CDATA refers to character data not parsed by the XML parser. Tags inside CDATA will be not be considered as regular XML tags, but as simple strings. correct In XML, implies that a university can have zero or more students. incorrect In XML, implies that 'height' comes with a compulsory attribute 'unit'. incorrect In XML, requires that each student has a unique value for the attribute studentnr in the XML document. incorrect
MC Which statement is NOT CORRECT? An XML document can be represented as a tree. incorrect XML is case-sensitive. incorrect XML start tags can contain attribute values. incorrect XML does not allow to define new tags. correct
MC Which of the following statements about DTD is correct? In XML, implies that a university can have zero or more students. incorrect In XML, implies that 'height' comes with a compulsory attribute 'unit'. incorrect In XML, requires that each student has a unique value for the attribute studentnr in the XML document. incorrect In XML, CDATA refers to character data not parsed by the XML parser. Tags inside CDATA will be not be considered as regular XML tags, but as simple strings. correct