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That Is a Correlated Subquery
That Is a Correlated Subquery? Correlated Subquery is a subquery that is evaluated once for each row processed by the parent statement. Parent statement can be Select, Update or Delete. Use Correlated Subquery to answer multipart questions whose answer depends on the value in each row processed by p... 2007-04-15, 5128👍, 0💬

What is "this" keyword?
What is "this" keyword? It refers to the current object. 2008-11-04, 5127👍, 0💬

What Are the Values Submitted on Radio Button Fields
What Are the Values Submitted on Radio Button Fields? - XHTML 1.0 Tutorials - Understanding Forms and Input Fields A "radio" button input field does not allow viewers to enter any input values directly. If a form is submitted, "radio" button input fields will be submitted with values based on the fo... 2007-05-12, 5127👍, 0💬

How To Convert Characters to Times
How To Convert Characters to Times? - Oracle DBA FAQ - Understanding SQL Basics You can convert dates to characters using the TO_CHAR() function as shown in the following examples: SELECT TO_CHAR(TO_DATE('04:49:49', 'HH:MI:SS'), 'DD-MON-YYYY HH24:MI:SS') FROM DUAL; -- Default date is the first day o... 2007-04-23, 5127👍, 0💬

How To Get the Number of Rows Selected or Affected by a SQL Statement
How To Get the Number of Rows Selected or Affected by a SQL Statement? - PHP Script Tips - Working with MySQL Database There are two functions you can use the get the number of rows selected or affected by a SQL statement: mysql_num_rows($rs) - Returns the number of rows selected in a result set obj... 2007-04-19, 5126👍, 0💬

What Is a http-equiv META Tag/Element
What Is a http-equiv META Tag/Element? - XHTML 1.0 Tutorials - Document Structure and Head Level Tags a http-equiv meta element is a special meta element that provides information equivalent to HTTP headers. A http-equiv meta element must include the "http-equiv" attribute as, http-equiv="Content-Ty... 2007-05-12, 5125👍, 0💬

How To Check and Repair MyISAM Tables
How To Check and Repair MyISAM Tables? - MySQL FAQs - Storage Engines: MyISAM, InnoDB and BDB If you have a corrupted MyISAM table, like the one resulted from the previous tutorial exercise, you can use the "CHECK TABLE" and "REPAIR TABLE" commands to try to repair it. The following tutorial exercis... 2007-05-10, 5124👍, 0💬

How To Rollback the Current Transaction
How To Rollback the Current Transaction? - Oracle DBA FAQ - Understanding SQL Transaction Management If you have used some DML statements updated some data objects, you find a problem with those updates, and you don't want those updates to be permanently recorded in the database, you can use the ROL... 2007-04-18, 5124👍, 0💬

What Are the XHTML Elements Defined with Mixed Contents
What Are the XHTML Elements Defined with Mixed Contents? - XHTML Tutorials - Introduction To Element Content Syntax The following XHTML elements are defined to use the mixed content model: &lt;p&gt; - Element to insert a paragraph. &lt;pre&gt; - Element to insert a pre-formatted text... 2007-05-12, 5123👍, 0💬

Are Atom Feed Files XML Documents
Are Atom Feed Files XML Documents? - RSS FAQs - Atom Feed File Structure and Elements Yes. Atom feed files are XML (eXtensible Markup Language) documents. Atom feed files must be well-formed XML documents, respecting the following XML rules. The first line must be the "xml" processing instruction wi... 2007-05-12, 5123👍, 0💬

What Are the Formatting Behaviors of HTML Elements
What Are the Formatting Behaviors of HTML Elements? - CSS Tutorials - HTML Formatting Model: Block, Inline and Floating Elements From a formatting behavior point of view, HTML elements can be divided into 2 categories: Block Element - Formatted as a rectangular block occupying the entire width of th... 2007-05-11, 5122👍, 0💬

Where Table Data Is Stored by the MyISAM Storage Engine
Where Table Data Is Stored by the MyISAM Storage Engine? - MySQL FAQs - Storage Engines: MyISAM, InnoDB and BDB By default, MySQL provides \mysql\data directory for all storage engines to store table data. Under \mysql\data directory, each database will have its own subdirectory to store table data.... 2007-05-10, 5121👍, 0💬

What Is a Initialization Parameter File
What Is a Initialization Parameter File? - Oracle DBA FAQ - Oracle Basic Concepts An initialization parameter file is a text file that contains a list of initialization parameters. The file should be written in the client's default character set. Sample initialization parameter files are provided on... 2007-04-21, 5121👍, 0💬

How can you cache different version of same page using ASP.NET
How can you cache different version of same page using ASP.NET cache object ? Output cache functionality is achieved by using “OutputCache” attribute on ASP.NET page header. Below is the syntax &lt;%@ OutputCache Duration="20" Location="Server" VaryByParam="state" VaryByCustom="minorversion" Var... 2007-10-23, 5119👍, 0💬

How Many SQL DDL Commands Are Supported by "mysql"
How Many SQL DDL Commands Are Supported by "mysql"? - MySQL FAQs - Command-Line End User Interface mysql There are 4 SQL Data Definition Language (DDL) commands that are supported by "mysql". They are listed below with short descriptions: "CREATE dataObjectType dataObjectName" - Creates new database... 2007-05-08, 5119👍, 0💬

How To Open and Close an Explicit Cursor
How To Open and Close an Explicit Cursor? - Oracle DBA FAQ - Working with Cursors in PL/SQL An existing cursor can be opened or closed by the OPEN or CLOSE statement as shown in the following sample script: DECLARE CURSOR c_list IS SELECT * FROM countries; CURSOR t_list IS SELECT * FROM employees WH... 2007-04-29, 5119👍, 0💬

What Is a Session
What Is a Session? - PHP Script Tips - Understanding and Using Sessions A session is a logical object created by the PHP engine to allow you to preserve data across subsequent HTTP requests. There is only one session object available to your PHP scripts at any time. Data saved to the session by a sc... 2007-04-19, 5119👍, 0💬

What is concept of Boxing and Unboxing
What is concept of Boxing and Unboxing ? Boxing permits any value type to be implicitly converted to type object or to any interface type implemented by value type. Boxing is a process in which object instances are created and copy values in to that instance. Unboxing is vice versa of boxing operati... 2007-10-22, 5118👍, 0💬

Which parts of an XML document are case-sensitive
Which parts of an XML document are case-sensitive? All of it, both markup and text. This is significantly different from HTML and most other SGML applications. It was done to allow markup in non-Latin-alphabet languages, and to obviate problems with case-folding in writing systems which are caseless... 2007-04-11, 5118👍, 0💬

How To Return a Reference from a Function
How To Return a Reference from a Function? - PHP Script Tips - Creating Your Own Functions To return a reference from a function, you need to: Add the reference operator "&" when defining the function. Add the reference operator "&" when invoking the function. Here is a PHP script on how to ... 2007-04-14, 5117👍, 0💬

Hyper Links and Images
Hyper Links and Images - XHTML 1.0 - Interview Questions What is a hyper link? What is a URL? How to included an image in the middle of a sentence? How to place an image to the right side of a paragraph? What is an image map? 2007-05-12, 5115👍, 0💬

How To Generate a Feed category Element
How To Generate a Feed category Element? - RSS FAQs - Atom Feed File Structure and Elements The &lt;category&gt; element is not a required sub-element of the &lt;feed&gt; element. However, it is recommended to have one or more &lt;category&gt; elements to provide classificati... 2007-05-12, 5114👍, 0💬

How To Delete an Existing Column in a Table
How To Delete an Existing Column in a Table? - MySQL FAQs - Understanding SQL CREATE, ALTER and DROP Statements If you have an existing column in a table and you do not need that column any more, you can delete it with "ALTER TABLE ... DROP COLUMN" statement. Here is a tutorial script to delete an e... 2007-05-11, 5114👍, 0💬

What Is the Command Line End User Interface - mysql
What Is the Command Line End User Interface - mysql? - MySQL FAQs - Command-Line End User Interface mysql "mysql", official name is "MySQL monitor", is a command-line interface for end users to manage user data objects. "mysql" has the following main features: "mysql" is command line interface. It i... 2007-05-10, 5114👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML