Discuss the limits of DTDs, using examples.
What will be an ideal response?
DTDs are commonly used for validation largely because of XML's origins as an offshoot of SGML. SGML was originally designed for text-based documents, such as reports and technical manuals. As long as data content is limited to simple text, DTDs work well for validation. However, today XML is being used for a wider range of document types, and several limitations have prompted XML developers to explore alternatives to DTDs.One complaint about DTDs is their lack of data types. For example, you can declare anageelement in a DTD, but you cannot specify that theageelement may contain only numbers, or that numbers must fall within a specified range of values. You can declare adateOfBirthelement, but the DTD won't have the tools to force the element to contain only dates. DTDs simply do not provide the control over data that users often require. DTDs also do not recognize namespaces, so they are not well-suited to an environment in which a compound document contains data collected from dozens of XML vocabularies. This is a concern if you are working on several XML vocabularies supporting a wide range of information.Finally, DTDs employ a syntax called Extended Backus Naur Form (EBNF), which is different from the syntax used for XML. This means that the document's author must be able to work not only with the syntax of XML, but with EBNF as well. For developers who want to work with only one language, this could be a concern.
You might also like to view...
Explore DNS Response Traffic
Wireshark is an open source packet capture and analysis tool. Wireshark gives a detailed breakdown of the network protocol stack. Wireshark allows you to filter traffic for network troubleshooting, investigate security issues, and analyze network protocols. Because Wireshark allows you to view the packet details, it can be used as a reconnaissance tool for an attacker. In this lab, you will install Wireshark on a Windows system and use Wireshark to filter for DNS packets and view the details of both DNS query and response packets. Required Resources ? 1 Windows PC with Internet access and Wireshark installed Instructor Note: Using a packet sniffer such as Wireshark may be considered a breach of the security policy of the school. It is recommended that permission is obtained before running Wireshark for this lab. If using a packet sniffer such as Wireshark is an issue,
The x86 provides four instructions to support procedure call/return: CALL, ENTER, LEAVE, and _________.
Fill in the blank(s) with the appropriate word(s).
Android devices do NOT support voice recognition
Indicate whether the statement is true or false
You can add new worksheets to a workbook but you cannot delete worksheets
Indicate whether the statement is true or false