How do you comment in a schema?

How do you comment in a schema?

The following example adds a comment to the public schema: => COMMENT ON SCHEMA public IS ‘All users can access this schema’; The following examples remove a comment from the public schema. => COMMENT ON SCHEMA public IS NULL; => COMMENT ON SCHEMA public IS ”;

Does XML allow commenting elements?

Allows notes and other human readable comments to be included within an XML file. XML Parsers should ignore XML comments. Some constrains govern where comments may be placed with an XML file.

How comments can be represented in XML?

An XML comment encountered outside the document type declaration is represented by the Comment value syntax element. It contains the comment text from the XML message. If the value of the element contains the character sequence –> , the sequence is replaced with the text –> .

How do you comment and uncomment in XML?

If you have the XML Tools plug-in, you can use the following shortcuts for block commenting/uncommenting:

1. Ctrl + Alt + Shift + C — comment selection.
2. Ctrl + Alt + Shift + R — uncomment selection.

What is the advantage of using XML comments?

XML comments help speed development by providing IntelliSense on custom methods and other code constructs. XML comments encourage code reuse by providing a path to generate API style reference documentation from your source code.

How do you add comment code?

Here’s a list of four best practices for code commenting.

1. Make use of code annotations or tags. Many programming languages define standards for code commenting.
2. Keep code comments in the editor.
3. Write down why you are doing something.
4. Don’t refer to other documents or comments.
5. Write comments while writing code.

How do you put comments in code?

How do you write comments in SQL?

Comments

1. Begin the comment with a slash and an asterisk (/*). Proceed with the text of the comment. This text can span multiple lines. End the comment with an asterisk and a slash (*/).
2. Begin the comment with — (two hyphens). Proceed with the text of the comment. This text cannot extend to a new line.

How do you comment out code in SQL?

To comment out or uncomment SQL code in the SQL and XQuery editor:

1. Select the SQL code that you want to comment out or uncomment. For a single line, click anywhere in the line of code. For multiple lines, drag the pointer through the lines of code.
2. Right-click the selected SQL code, and then select Toggle Comment.

How do you comment multiple lines in XML?

If you are using Eclipse IDE you can comment out lines in an XML file by highlighting them and press Ctrl+Shift+c.

What are advantages of XML over HTML?

Advantages of XML over HTML

• XML encodes data in tightly-validated tree structures.
• HTML attempts to control the appearance and presentation of data, while XML does not.
• XML is a standard data format that permits applications to exchange information across platforms and operating systems.
• XML is open and extensible.

What is the advantage and disadvantage of XML?

Advantages of XML 1) It supports Unicode, allowing almost any information in any written human language to be communicated. 2) It can represent common computer science data structures: records, lists, and trees. 3) Its self-documenting format describes structure and field names as well as specific values.

Should I add comments to my code?

Good comments compliment your code, while bad ones pull readers away from the main points. Before putting any comments, ask yourself whether it would serve any purposes rather than distract people from comprehending your program. Good codes have rhythm while mediocre codes have a lot of pauses.