PCDATA stands for parsed character data, that is, text that is not markup. When defining a new XML language, you must specify its grammar — what tags are allowed, what child-tags they may (or, must) contain. PCDATA stands for 'parseable character data', in plain terms, character strings (text) that can contain markup (elements). It is a markup language used to catalog and sort data into a form readable by a wide range of software and technologies. The tag (#PCDATA) stands for parsed character data, meaning that the data is taken from what is entered by the author of the document. Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. types. For example, the file xhtml1-transitional. 2. – Headquartered in the Netherlands, Pcdata also has a dedicated sales and support office for the North. What Is PCDATA? PCDATA stands for Parsed Character DATA. The following is an example of a document that conforms to this DTD: This is the combination of (#PCDATA) and children elements. keyword in a DTD document to declare an XML element. 1. If the parentheses include the keyword #PCDATA or one of the other data types available in XML DTD, the element is a leaf node. An XML document which follows the rules above (e. Your element declaration, <!ELEMENT input (#PCDATA)>. Cancer Gene Index elements not only contain child elements and text elements, but also information about. PCDATA. It is the normal data stored in any XML file that will be parsed by an XML parser. PCDATA stands for Parsed Character data. The moniker PCDATA stands for parseable character data . PCDATA: (Parsed Character Data): XML parsers are used to parse all the text in an XML document. While HTML is designed with focus on how to ‘display’ data,. PCDATA stands for parsed character data, that is, text that is not markup. . An element is everything from the element's start tag to the element's end tag: <firstName>John</firstName> <lastName>Smith</lastName> In DTD, we declare element as follows: <!ELEMENT firstName (#PCDATA)> <!ELEMENT lastName (#PCDATA)> Here PCDATA stands for parsed character data. XML – Elements, Attributes, Entity reference functionalists are define in DTD. So, for an XML document to be well-formed, it needs to use correct XML syntax, and it needs to conform to its DTD or. lect37-dtd DTD ch06. SyntaxCS311 Final Term Quiz No. PCDATA stand for Parsed Character Data. Example. 1]. PCDATA: (Parsed Character Data): XML parsers are used to parse all the text in an XML document. 1] and PCDATA content are said to have “mixed content” [Section 3. Think of character data as the text found between the start tag and the end tag of an XML element. Neither text nor child elements. The section you cite says that mixed content may contain character data, optionally interspersed with child elements. g. well-formed. As seen inr"," "," "," "," ","The tag specifies a list of pre-defined options for an element. declarations]> • There are 2 data types, PCDATA and CDATA • PCDATA is parsed character data. Question 7. This model tells the computer that a "student" consists of a sequence of header elements, , , optionally , and . e. Question 6. XML – Elements, Attributes, Entity reference functionalists are define in DTD. What is the password. Pcdata Inc USA stands for Quality, effective efficiency and innovation. Although XML itself has rules, the rules defined in a DTD are specific to your own needs. not. PCDATA stands for Parsed Character Data, which is roughly sim • A bar symbo For example, if your XML document models the components of a house you mig define an element, foundation, that contains another element, fl a <!ELEMENT foundation (floor) > <!ELEMENT floor (#PCDATA) > <!ATTLIST foundationmaterial (#PCDATA < Another s. 2]. The rules for mixed content models are similar to the element content as discussed in the previous section. The two types of XML parser are: (1) Non-validating XML parser: It checks if an XML document is well-formed, i. XML uses XSL to describe data b. What does Pcdata stand for? Parsed Character Data (PCDATA) is a data definition that originated in Standard Generalized Markup Language (SGML), and is used also in Extensible Markup Language (XML) Document Type Definition (DTD) to designate mixed content XML elements. For example, the definition for burns might be <!ELEMENT burns (#PCDATA | quote)*>When defining a new XML language, you must specify its grammar — what tags are allowed, what child-tags they may (or, must) contain. 2. Within mixed content models, text can appear by itself or it can be interspersed between elements. Nothing between the opening tag and the closing tag. The moniker PCDATA stands for parseable character data . DTD stands for Document Type Definition. What we are now saying is that an element called wml can only have a card in it. 565-242-412. e. XML Documents, DTD,Document Type Definition. View Defining Web Document Types. But we don't need that for our simple XML file. The complete set of rules for declaring entities and elements in a DTD is fairly complex and beyond the scope of this chapter. Predefined Character Data; Parsed Character Data; Pure Character Data; None of the given; Which of the following is used to retrieve data from XML documents?Elements with Children (sequences) Elements with one or more children are declared with the name of the children elements inside parentheses: When children are declared in a sequence separated by commas, the children must appear in the same sequence in the document. Technology, Computer Science, Computing Suggest to this list Related acronyms and abbreviations Share PCDATA Meaning page What does PCDATA abbreviation stand. A. Using this example - <name>XML Tutorial</name> — the XML Tutorial part. PCDATA: (Parsed Character Data): XML parsers are used to parse all the text in an XML document. Question 6. PCDATA stands for “parsed character data”, and it refers to the text value of an element; “parsed” meaning that it can contain entities. DTD: Stands for "Document Type Definition. View full document. Elements with both element content [Section 3. Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. When defining a new XML language, you must specify its grammar — what tags are allowed, what child-tags they may (or, must) contain. This means that it is just a string of characters without any special formatting or markup. Select a course code for Subjective Questions: ACC311 CS001 CS101 CS201 CS301 CS607 CS701 CS702 CS703 CS704 CS707 CS708 CS710 CS711 CS718 CS721 CS724 ECO401 ECO403 ENG101 ENG301 MGT703 MTH501 STA301. An element is everything from the element's start tag to the element's end tag: <firstName>John</firstName> <lastName>Smith</lastName> In DTD, we declare element as follows: <!ELEMENT firstName (#PCDATA)> <!ELEMENT lastName (#PCDATA)> Here PCDATA stands for parsed character data. via the keyword !ATTLIST. For example, "©" is XHTML entity referring to the. A DTD can be declared inline in your XML document, or as an. Compare that with CDATA, where the characters are not to be parsed by the XML, XHTML, or HTML parser. The book has two sections called Preface and First and only chapter respectively, the second of which has two subsections. In XML, PCDATA stands for Parsed Character Data, which indicates that the data should be parsed by the XML parser. In part 2 you will learn about the components of XML documents seen from a DTD perspective, and how to use them for the markup declarations in the DTD. Compare that with CDATA, where the characters are not to be parsed by the XML, XHTML, or HTML parser. CS311 Final Term Quiz No. A name element contains an optional title element the question mark means the from COMPUTER S 123 at University of New Orleans<!ELEMENT myMessage ( #PCDATA )>]> The first myMessage is the name of the document type declaration. PCDATA means parsed character data. PCDATA stands for processed character data, which means that the data goes through the xml parser, and html will cause it to raise an exception. This type of data is not interpreted by the XML parser and. g. For example, the DTD in Fig. Syntax: <!ELEMENT element_name (#. The book has two sections called 'Preface' and 'First and only chapter' respectively, the second of which has two subsections. recall that an XML document is called valid if it is well-formed and has been validated against a DTD; validation is essentially checking that the XML document, viewed as a tree, is a parse tree in the language specified by the DTD; can use an online XML validator; each of the following has the same DTD specified (as on the. Using this example - <name>XML Tutorial</name> — the XML Tutorial part is the PCDATA. On the other hand, CDATA should be used when the data is more complex and contains special characters that need to be treated differently than. All of the SGML delimiters listed in the table of delimitersare recognized in PCDATA. technically qualifies as allowing mixed content, but does not allow any elements to be mixed in. DTD XSD; 1) DTD stands for Document Type Definition. Elements that contain only other elements are said to have element content [Section 3. !ELEMENT note defines that the note element must contain four elements: "to,from,heading,body". Instructions in a DTD include what elements are used, whether these elements contains parsed character data ( #PCDATA), or other elements, or both. contain text. Simply put, PCDATA are data that are always recognized as markup. Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. Syntax:The "P" in PCDATA stands for parsed, and that fits with the fact that "<" is significant in PCDATA and not CDATA, but "&" is significant in CDATA attributes but not in CDATA sections. This is what the above ch06-wonders. Students also studiedWhy such a convoluted rule for the head tag Why not just write ELEMENT head from COE coe at University Of the City of Manila (Pamantasan ng Lungsod ng Maynila)PCDATA stands for parsed character data, which includes regular text characters except <, &, or the sequence ]]>. • It's the tag that is shown and also will be parsed (interpreted) by the program that reads the XML document. Here are some basic rules about PCDATA: PCDATA is a string of characters and HTML entities. The syntax for declaring that elements contain only child elements is ; lt!ELEMENT element (children)gt ; Where children is a list of child elements. The major difference between AdaBoost and Gradient Boosting Algorithm is how the two algorithms identify the shortcomings of weak learners (eg. 2. 1]. c. Example: <!ELEMENT name. XML also uses DTDs ( D ocument T ype D efinitions) to define the XML document structure. 00 out of 1. The PCDATA stands for parseable character data. e. XML stands for Extensible Markup Language. If the parentheses include the keyword #PCDATA or one of the other data types available in XML DTD, the element is a leaf node. It allows. Facts & Figures. Write T for True and F for False: a. Here #PCDATA means parse-able text data. types. a document type is defined by specifying the constraints which any document which is an instance of the type must satisfy. To specify a mixed-content model, just list #PCDATA along with the child elements you want to allow:PCDATA stands for Parsed Character DATA and basically implies that the information found within the element will be character data as opposed to numerical data (Bourret, 1998). 0 specification page, formally defines the grammar for the XHTML 1 web markup. 2. Example: <!ELEMENT name. Data: Data are pieces of information, such as “plaintiff,” “defendant,” “name”, and. Elements that contain only other elements are said to have element content [Section 3. And the card can have any sort of text within it. Tags inside the PCDATA will be treated as markup and entities will be expanded. In this case, the validator needs to be fixed :-) Edward On 1/12/10 12:35 PM, Matt Jones wrote: > Hi Christopher, > > Actually, #PCDATA stands for *parsed* character data, and is explicitly > the type of element content that is parsed text (for additional markup > and entity substitutions, for example). dtd">. XHTML entities are escape sequences used to refer to special characters that are not so easy to enter them in a text document. DTD stands for Document Type Definition. In the DTD, the symbol PCDATA stands for parsed character data, the normal text characters in an HTML document. Parentheses can be nested when specifying elements. TRUE. -Established in 1988 in the Netherlands, Pcdata is the original & largest provider of paperless distribution solutions for industrial bakers around the globe and has expanded into multiple industries around the world. Study with Quizlet and memorize flashcards containing terms like What does DTD stand for?, What is a XML document with correct syntax is called?, What is PCDATA stand for and more. For example, See the XML below Rajeev 565-242-412 812768142 In the above sample While Parsing the XML. DTD. XML Hierarchical (Tree) Data Model. a. DTD Elements - XML elements can be defined as building blocks of an XML document. In a full declaration, the children must also be declared, and the children can. 72. (< will be changed to <, <p> will be taken to mean a paragraph tag, etc). PCDATA stands for Parsed Character data. Find the upc attribute that matches the value of the upc variable. 2. In addition to element names, the special symbol #PCDATA is reserved to indicate character data. DTD stands for document definition. PCDATA stands for Parseable Character Data. An element that is defined to contain PCDATA can't contain any other element (no sub-tags). Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. 1. (< will be changed to <, <p> will be taken to mean a paragraph tag, etc). old, making it a great backup/restore solution for Windows reinstall, migration to SSD or bigger HDD, or simply to keep a safe backup copy of your data. It contains deceleration of XML languages elements. Or you can tell the XML parser to not parse your data by placing it in a CDATA section: <data><! [CDATA [a < b]]></data>. PCDATA stands for “parsed character data”, and it refers to the text value of an element; “parsed” meaning that it can contain entities. The parser will process any tags it finds and replace entity references with their actual values. PCDATA also includes general entities, which I’ll discuss in next month’s column. : 5) DTD doesn't define order for. DTD: Element declaration An element can contain other elements <student> <firstName>John</firstName> <lastName>Smith</lastName> <email> [email protected] </email> </student> In DTD, we declare as follows: <!ELEMENT student (firstName,lastName,email)> It means, the. 2. It is derived from S tandard G eneralized M arkup L anguage (SGML). Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. Technology, Computing, Technical. CDATA is not processed so what you put in is essentially what you get out. It refers to the standard text that is presented within a particular element when it is parsed by an XML parser. Parsed data is the text between the start tag and the end tag of an XML element. XML is not a replacement of HTML. !ELEMENT note defines that the note element must contain four elements: "to,from,heading,body". Namespaces are not supported by DTDs. <!DOCTYPE ancient_wonders SYSTEM "wonders. (For a complete semantics of DTD, see [9]. • CDATA will not be parsed or shown. DTDs are written in Extended Backus-Naur Form (EBNF). . What does XML parser do? Answer : An XML parser basically checks whether a document is following XML standard or not. In the above sample While Parsing the XML file,,,565-242-412, 812768142,. EXAMPLE. – Tags inside the PCDATA will be treated as markup and entities will be expanded. PCDATA stands for parsed character data, that is, text that is not markup. CDATA sections begin with the string " ". PCDATA stands for Parsed Character Data and is the way you specify non-markup text in your DTDs. <!ELEMENT drivername (#PCDATA)> <!ELEMENT databaseURL (#PCDATA)> You can use regular expressions to describe the children in more detail. What does XML parser do? Answer: An XML parser basically checks whether a document is following XML standard or not. Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. 13 TYPES OF ELEMENT CONTENT. D. Tags within the PCDATA are viewed as markups, and individuals are expanded. Which document is used to define the style of an XML document?ELEMENT is element declarations, PCDATA is the parsed character data which are parsed by the XML parsers. When defining a new XML language, you must specify its grammar — what tags are allowed, what child-tags they may (or, must) contain. dtd">. It is used to define document structure with a list of. via the keyword !ATTLIST. markup and entities will be expanded. While the AdaBoost model identifies the shortcomings by using high weight data points, gradient. Here PCDATA stands for parsed character data. unstructured data • Relational databases are highly structured • All data resides in tables • You must define schema before entering any data 2 Answers. <!DOCTYPE ancient_wonders SYSTEM "wonders. If you're interested, see pages 1131-1132 of the book. In this context, 'parsed' signifies that the relevant data is read and handled by a parser, which is usually an XML processor. 2]. Tags inside the CDATA text are not treated as markup and. Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. Question 6. The rules for mixed content models are similar to the element content as discussed in the previous section. Syntax basics for writing DTD’s CDATA inside PCDATA. FALSE. reference. FALSE. (Recall that “pre” stands for pre-formatted and is also used for displaying quoted material. Tags inside the PCDATA will be treated as markup and entities will be expanded. DTD stands for Document Type Definition. PCDATA stands for Parsed Character Data and is used to indicate that the data contained within an element is plain text. What does XML stand for? Extensible Markup Language; X-Markup Language; Example Markup Language; eXtra Modem Link; In XML the term PCDATA Stands for _____. SAX doesn’t provide object model for you, therefore here we have to create our own custom object model and write a Event handler class that listens to SAX Events and does element to object mapping. 2. In other terms, you can assume that a parsed character data implies. #PCDATA stands for "parsed character data", meaning an XML parser should parse the characters to resolve character and entity references. No. You might also like. PCDATA stands for Parsed Character Data and is the way you specify non-markup text in your DTDs. In the XML file, select "view source" to view the DTD. Anything inside the square brackets ([]) constitutes the internal subset. RDBMS. 812768142. XML’s widespread use stems largely from its simplicity, as it is easy to write and easy to read. October 3, 1998. -Established in 1988 in the Netherlands, Pcdata is the original & largest provider of paperless distribution solutions for industrial bakers around the globe and has expanded into multiple industries around the world. Elements that contain both other elements and #PCDATA are said to have mixed content [Section 3. 00 out of 1. So you see things in a DTD like this: !ELEMENT script (#PCDATA). Atzeni (heavily from Peter Wood) XML Data Management 74 / 239 Document Type Definitions Mixed Content Models Say we want to mix text with elements em, img and b as the allowed contents of a p element The. Therefore, an element that has the allowable content (#PCDATA) may not contain any children. 00 Flag question Question text There is a way of describing XML data, how? Select one: a. 2. Note that there is no notion of a “chapter” as. XHTML entities are escape sequences used to refer to special characters that are not so easy to enter them in a text document. The DTD can also define multiple ENTITY types - & and similar. Declarations of element type #PCDATA mean that XML Parsers will parse the text contents found between the start and end tags of an XML element that correspond to this DTD element. The following is an example of a document that conforms to this DTD:Validation of XML Documents. It's worth. This means not merely a string of characters, but some entities that may have to be escaped or interpreted by the parser (browser) to have special meaning. • You can also define (#CDATA), this stands for character data. Elements that contain both other elements and #PCDATA are said to have mixed content [Section 3. XML DTD What is DTD DTD stands for Document Type Definition. PCDATA stands for parsed character data, which is roughly similar to a string data type. 67. If the parentheses include names of other elements, these would be the children of the element in the tree structure. PCDATA stands for “parsed character data”, and it refers to the text value of an element; “parsed” meaning that it can contain entities. PCDATA: (Parsed Character Data): XML parsers are used to parse all the text in an XML document. What is XML? Benefits of XML Tags Elements • Value • Empty • Root • Wrapper XML (Extensible Markup Language) is an internationally recognized standard for describing document content for reproduction in electronic form. PCDATA stands for Parsed Character data. 4. XML uses XSL to describe data b. PCDATA stands for Parsed Character DATA. But 'mixed' goes one step ahead and permits both text and elements to exist in the content of the declared element. Syntax CS311 Final Term Quiz No. For example, "©" is XHTML entity referring to the. End Declaration − Finally, the declaration section of the DTD is closed using a closing bracket and a closing angle bracket (]>). This type of DTD is declared outside the XML file with a separate file. A DTD must declare the content model for each element used in the XML document. g. <!DOCTYPE root-element [element-declarations]>. The rules for mixed content models are similar to the element content as discussed in the previous section. An element that is defined to contain PCDATA can't contain any other element (no sub-tags). ; a software and hardware independent way of storing, transporting, and sharing data. – PCDATA is the text that will be parsed by a parser. The division into lines has no significance apart from indicating a word end. Create an attribute called title for the current XML element. Any elements defined in a DTD can be used in these documents, along with the predefined tags and attributes that are part of each markup language. Display Manager. 24/7 helpdesk including local support is guaranteed. • PCDATA stands for Parsed Character Data. Within mixed content models, text can appear by itself or it can be interspersed between elements. Elements that contain both other elements and #PCDATA are said to have mixed content [Section 3. Since I’ve included the cite and emphasis elements in my content model for the paragraph. 2]. Defining Web Document Types. The GXSL class «pcdata» has no name and provides its own icon as shown in Figure 5. This is supported by the production in that section. dtd). The moniker PCDATA stands for parseable character data . Success! ans : webapp. Instructions also. PCDATA stands for “parsed character data”, and it refers to the text value of an element; “parsed” meaning that it can contain entities. For example, the definition for burns might be <!ELEMENT burns (#PCDATA | quote)*>When defining a new XML language, you must specify its grammar — what tags are allowed, what child-tags they may (or, must) contain. g. This is the combination of #PCDATA and children elements. Question 6. Place #PCDATA in DTD mixed Content. Structured vs. : XSD stands for XML Schema Definition. While standard tag sets are derived, one can envision the potential for precise searching. parsed character data, or text. The moniker PCDATA stands for parseable character data . What Is PCDATA? PCDATA stands for Parsed Character DATA. XML uses a description node to describe data c. is Pcdata’s subsidiary for the North American market executing sales, project management and system implementations in the USA and Canada. Simply speaking, PCDATA stands for Parsed Character Data. XML. 2]. Students also studiedDocument Types. (#PCDATA) stands for parsed character data. A Document Type Definition (DTD) describes the tree structure of a document and something about its data. Data also appears in documents. strip away extra white space. Answer: If an element should contain plain text, you define the element using #PCDATA. Elements that contain only other elements are said to have element content [Section 3. The rules for mixed content models are similar to the element content as discussed in the previous section. Line 02 specifies title to be a string of characters (the PC of PCDATA stands for parsed character). That means the characters are to be parsed by the XML, XHTML, or HTML parser. For example, "©" is XHTML entity referring to the. It is a set of markup affirmations that actually define a type of document for the SGML family, like GML, SGML, HTML, XML. This definition appears very rarely and is found in the following Acronym Finder categories: Information technology (IT) and computers; Link/Page Citation Abbreviation Database Surfer. d external reference. <!DOCTYPE ancient_wonders SYSTEM "wonders. If you need namespaces you really should be using a schema for a start (either W3C Schema or RelaxNG). PCDA. Peiyuan Pan Date: 29 May 2018 Start time: 14:00 Duration: 2 Hours Exam type: Unseen / Closed Materials supplied: Standard Examination Materials Materials. XML does not require a DTD. It is the normal data stored in any XML file that will be parsed by an XML parser. The description (#PCDATA) specifies parsed character data. DTD is text based document with . DTD constraint. This is an XML document with a Document Type Definition: Like the above example, if the DTD is to be included in your XML. Defining Web Document Types 1. Question 6. Elements can behave as a container to hold text, elements, attributes, media objects or mix of all. In addition to element names, the special symbol #PCDATA is reserved to indicate character data. #PCDATA stands for “printable character data. PCDATA means parsed character data, so in this case the declared element is allowed to have character data inside of it now ,you might be wondering if there is a way to define an element that has a CDATA section in it, which is unparsed. However, an xml file may also contain an optional DTD (Data Type Definition) to specify specific requirements for the tags and the XML structure. (< will be changed to <, <p> will be taken to mean a paragraph tag, etc). Answer: If an element should contain plain text, you define the element using #PCDATA. Figure 7b shows a simple document in this format, comprising a short book with two associated images. Cross-site Scripting is one of the most prevalent vulnerabilities present on the web today. This is the combination of #PCDATA and children elements. Raw Text: Character Data Looking for the definition of PCDATA? Find out what is the full meaning of PCDATA on Abbreviations. PCDATA is the text that a parser must read from. Elements that contain only other elements are said to have element content [Section 3. TYPES OF ELEMENT CONTENT • ELEMENT content. ) XML does . The above line in your DTD allows the name element to contain non-markup data in your XML document: PCData stands for "Parsed Character Data". 0 specification page, formally defines the grammar for the XHTML 1 web markup. PCDATA stand for Parsed Character Data. It is actually possible to specify that an element can contain both PCDATA and other elements. It defines the document structure with a list of legal elements. i've managed to do so , but all the data is being tagged as CDATA and not being parsed. " A DTD defines the tags and attributes used in an XML or HTML document. This effectively ends the definition, and thereafter, the XML document follows immediately. PCDATA stands for Parsed Character data. PCDATA: (Parsed Character Data): XML parsers are used to parse all the text in an XML document. The following sender-element could be part of an XML-document:XML document with an internal DTD. An XML DTD can be either specified inside the document, or it can be kept in a separate document and. PCDATA stands for parsed character data, that is, text that is not markup. in an SVG document, every circle element must have an r (radius) attribute. Yes that is correct, PCDATA stands for processed character data, which means that the data goes through the xml parser, and html will cause it to raise an exception. The PCDATA stands for parseable character data. dtd extension It is used to define the structure of XML document. Looking for online definition of PCDATA or what PCDATA stands for? PCDATA is listed in the World's most authoritative dictionary of abbreviations and acronymsWhat does PCDATA stand for? What does PCDATA mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: PCDATA. Figure 7b shows a simple document in this format, comprising a short book with two associated images. 4. What Are the XHTML Elements Defined with Sub-elements Contents? - XHTML Tutorials - Introduction To Element Content SyntaxThis is the lightest-weight solution, and is suitable for the homework assignment. PCDATA stands for Parsed Character Data and is the way you specify non-markup text in your DTDs. 2. XML is case sensitive. Question 6. Similarly, for attributes — what attributes are required on certain tags (like “ img ” tags must have a “ src ” attribute and otherwise be empty), and what the allowed values are for attributes. 75) fi/catalog/cd [@upc=fi + upc + fi] means. XML was developed as. An element that is defined to contain. Here are some basic rules about PCDATA: PCDATA is a string of characters and XHTML entities. They can be added to them but it really is a hack and you need to take a great deal of care in order to make them work. Parsed Character Data (PCDATA) is a data definition that originated in Standard Generalized Markup Language (SGML), and is used also in Extensible Markup. lt!ELEMENT element (PCDATA)gt ; The keyword PCDATA stands for parsed-character data and is any well-formed text string. The moniker PCDATA stands for parseable character data . The WDDX DTD allows for multiple encodings of binary data. The DTD defines the constraints on the structure of an XML document.