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What is a Thread
What is a Thread ? A thread is the basic unit to which the operating system allocates processor time.
2007-10-22, 5203👍, 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, 5203👍, 0💬

How To Check Your Oracle Database 10g XE Installation
How To Check Your Oracle Database 10g XE Installation? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition If you want to check your fresh installation of 10g Express Edition without using any special client programs, you can use a Web browser with this address, http://localhost:8...
2007-04-24, 5203👍, 0💬

How To Pass an Argument to a Function
How To Pass an Argument to a Function? - PHP Script Tips - Creating Your Own Functions To pass an argument to a function, you need to: Add an argument definition in the function definition. Add a value as an argument when invoking the function. Here is a PHP script on how to use arguments in a funct...
2007-04-24, 5202👍, 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, 5202👍, 0💬

How Values in Arrays Are Indexed
How Values in Arrays Are Indexed? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations Values in an array are all indexed their corresponding keys. Because we can use either an integer or a string as a key in an array, we can divide arrays into 3 categories: Numerical Array - All ...
2007-04-20, 5201👍, 0💬

How To View the Data Files in the Current Database
How To View the Data Files in the Current Database? - Oracle DBA FAQ - Managing Oracle Tablespaces and Data Files If you want to get a list of all tablespaces used in the current database instance, you can use the DBA_TABLESPACES view as shown in the following SQL script example: SQL> connect SYSTEM...
2007-05-03, 5200👍, 0💬

How to make elements invisible?
How to make elements invisible? Change the "visibility" attribute of the style object associated with your element. Remember that a hidden element still takes up space, use "display" to make the space disappear as well. if ( x == y) { myElement.style.visibility = 'visible'; } else { myElement.style....
2011-06-07, 5199👍, 0💬

How To Use LIKE Conditions
How To Use LIKE Conditions? - MySQL FAQs - Introduction to SQL Basics A LIKE condition is also called pattern patch. There are 3 main rules on using LIKE condition: '_' is used in the pattern to match any one character. '%' is used in the pattern to match any zero or more characters. ESCAPE clause i...
2007-05-11, 5199👍, 0💬

How Many Categories of Data Types
How Many Categories of Data Types? - Oracle DBA FAQ - Understanding SQL Basics Oracles supports the following categories of data types: Oracle Built-in Datatypes. ANSI, DB2, and SQL/DS Datatypes. User-Defined Types. Oracle-Supplied Types.
2007-04-24, 5199👍, 0💬

How To Create a Testing Table
How To Create a Testing Table? - Oracle DBA FAQ - Understanding SQL DML Statements If you want to practice DML statements, you should create a testing table as shown in the script below: CREATE TABLE fyi_links (id NUMBER(4) PRIMARY KEY, url VARCHAR2(80) NOT NULL, notes VARCHAR2(1024), counts NUMBER,...
2007-04-22, 5199👍, 0💬

What Is a Mixed Selector
What Is a Mixed Selector? - CSS Tutorials - Introduction To CSS Basics A mixed selector is a selector that uses a combination of all other selectors. The following CSS shows some good examples: /* selects &lt;p class="quote"> tags */ P.quote {font-style: italic} /* selects &lt;p class="quote...
2007-05-11, 5198👍, 0💬

How To Export Several Tables Together
How To Export Several Tables Together? - Oracle DBA FAQ - Loading and Exporting Data If you don't want to export the entire schema and only want to export several tables only, you can use the "expdp" command with the "TABLES" parameter as shown in the following tutorial exercise: >cd \oraclexe\app\o...
2007-05-01, 5198👍, 0💬

What Is the Relation between XHTML and URL
What Is the Relation between XHTML and URL? - XHTML FAQs - Introduction To XHTML 1.0 URL (Uniform Resource Locator) is a compact string representation of the location for a Web document or other resource that is available on the Internet. The URL of an XHTML document is usually the document file nam...
2007-05-12, 5197👍, 0💬

What Is a PRE Tag/Element
What Is a PRE Tag/Element? - XHTML 1.0 Tutorials - Body Tag and Block Level Tags A pre element is a block level element that can be used directly as a sub-element in the body element. You can use pre elements to specify blocks of pre-formatted text with white space characters preserved. Here are bas...
2007-05-12, 5197👍, 0💬

How To Create a New Table
How To Create a New Table? - MySQL FAQs - Understanding SQL CREATE, ALTER and DROP Statements If you want to create a new table, you can use the "CREATE TABLE" statement. The following tutorial script shows you how to create a table called "tip": mysql> CREATE TABLE tip (id INTEGER PRIMARY KEY, subj...
2007-05-11, 5197👍, 0💬

How To Install Oracle Database 10g XE
How To Install Oracle Database 10g XE? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition To install 10g universal edition, double click, OracleXEUniv.exe, the install wizard starts. It will guide you to finish the installation process. You should take notes about: The SYSTEM pas...
2007-04-24, 5197👍, 0💬

How the Values Are Ordered in an Array
How the Values Are Ordered in an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations PHP says that an array is an ordered map. But how the values are ordered in an array? The answer is simple. Values are stored in the same order as they are inserted like a queue. If you wa...
2007-04-20, 5197👍, 0💬

What Tools to Use to View XHTML Documents
What Tools to Use to View XHTML Documents? - XHTML FAQs - Introduction To XHTML 1.0 The basic tool you need to view XHTML documents is any Web browser, like Internet Explorer (IE) or FireFox. The following tutorial shows you how to view a XHTML document with : Write an XHTML document and save it as ...
2007-05-12, 5196👍, 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, 5196👍, 0💬

How To Store CSS Definitions in External Files
How To Store CSS Definitions in External Files? - CSS Tutorials - Introduction To CSS Basics If you want to share a set of CSS definitions with multiple HTML documents, you should those CSS definitions in an external file, and link it to those HTML documents using the LINK tag in the HEAD tag as: &a...
2007-05-11, 5196👍, 0💬

How To Check Your PHP Installation
How To Check Your PHP Installation? - MySQL FAQs - PHP Connections and Query Execution PHP provides two execution interfaces: Command Line Interface (CLI) and Common Gateway Interface (CGI). If PHP is installed in the \php directory on your system, you can try this to check your installation: Run "\...
2007-05-10, 5195👍, 0💬

What Is a Result Set Object
What Is a Result Set Object? - PHP Script Tips - Working with MySQL Database A result set object is a logical representation of data rows returned by mysql_query() function on SELECT statements. Every result set object has an internal pointer used to identify the current row in the result set. Once ...
2007-04-19, 5195👍, 0💬

Why Is the Top Margin Not Showing
Why Is the Top Margin Not Showing? - CSS Tutorials - Understanding Multiple Element Formatting Rules If you are expecting a top margin to show up, and it is not showing up, it's probably because of the vertical margins collapsed due the following rules: Between two block elements - The bottom margin...
2007-05-11, 5194👍, 0💬

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