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What Is a Group Selector
What Is a Group Selector? - CSS Tutorials - Introduction To CSS Basics A group selector selects multiple HTML tags. Group selectors are specified with multiple tags separated with a comma like (tag, tag, tag). For example, the following CSS definition uses a group selector: /* set background color t... 2007-05-11, 5419👍, 0💬

What Is a Recycle Bin
What Is a Recycle Bin? - Oracle DBA FAQ - Managing Oracle Database Tables Recycle bin is a logical storage to hold the tables that have been dropped from the database, in case it was dropped in error. Tables in recycle bin can be recovered back into database by the Flashback Drop action. Oracle data... 2007-05-04, 5419👍, 0💬

How To Open a Cursor Variable
How To Open a Cursor Variable? - Oracle DBA FAQ - Working with Cursors in PL/SQL A cursor variable must be opened with a specific query statement before you can fetch data fields from its data rows. To open a cursor variable, you can use the OPEN ... FOR statement as shown in the following tutorial ... 2007-04-28, 5419👍, 0💬

How To Drop a Stored Function
How To Drop a Stored Function? - Oracle DBA FAQ - Creating Your Own PL/SQL Procedures and Functions If there is an existing stored function and you don't want it any more, you can remove it from the database by using the DROP FUNCTION statement as shown in the following script example: SQL> CREATE O... 2007-04-25, 5419👍, 0💬

How To Use "password" Input Fields
How To Use "password" Input Fields? - XHTML 1.0 Tutorials - Understanding Forms and Input Fields A "password" input field is defined as &lt;input type="password" .../&gt;. A "password" input field can be used to create an input field to allow viewers to enter text strings or numbers without ... 2007-05-12, 5418👍, 0💬

How do we get JavaScript onto a web page?
How do we get JavaScript onto a web page? You can use several different methods of placing JavaScript in you pages. You can directly add a script element inside the body of page. 1. For example, to add the "last updated line" to your pages, In your page text, add the following: &lt;p>blah, blah,... 2008-03-25, 5416👍, 0💬

What is SQL Cache Dependency in ASP.NET 2.0
What is SQL Cache Dependency in ASP.NET 2.0? SQL cache dependencies is a new feature in ASP.NET 2.0 which can automatically invalidate a cached data object (such as a Dataset) when the related data is modified in the database. So for instance if you have a dataset which is tied up to a database tabl... 2007-10-23, 5416👍, 0💬

What Happens If Protocol or Port Number Is Missing in a URL
What Happens If Protocol or Port Number Is Missing in a URL? - XHTML 1.0 Tutorials - Understanding Hyper Links and URLs From a syntax point of view, all URL parts are optional. If some parts are not included in a URL, the browser and the hosting computer will provide default values. Here are some ru... 2007-05-12, 5416👍, 0💬

How To Save Values to the Current Session
How To Save Values to the Current Session? - PHP Script Tips - Understanding and Using Sessions When session is turned on, a session will be automatically created for you by the PHP engine. If you want to save any values to the session, you can use the pre-defined associative array called $_SESSION.... 2007-04-18, 5416👍, 0💬

What are queues and stacks
What are queues and stacks ? Queue is for first-in, first-out (FIFO) structures. Stack is for last-in, first-out (LIFO) structures. 2007-10-23, 5415👍, 0💬

What Happens to the Current Transaction If the Session Is Ended
What Happens to the Current Transaction If the Session Is Ended? - MySQL FAQs - Transaction Management: Commit or Rollback If a session is ended, the current transaction in that session will be rolled back and ended. All the database changes made in the current transaction will be removed. This is c... 2007-05-11, 5414👍, 0💬

How To Specify Input Values for Checkboxes
How To Specify Input Values for Checkboxes? - PHP Script Tips - Processing Web Forms Checkboxes can be used in a form for two situations: As a single switch - One &lt;INPUT TYPE=CHECKBOX ...> tag, with no input value specified. When submitted with button pushed down, you will receive a value of ... 2007-04-23, 5414👍, 0💬

How To Use Values from Other Tables in UPDATE Statements
How To Use Values from Other Tables in UPDATE Statements? - Oracle DBA FAQ - Understanding SQL DML Statements If you want to update values in one with values from another table, you can use a subquery in the SET clause. The subquery should return only one row for each row in the update table that ma... 2007-04-21, 5414👍, 0💬

Can Group Functions Be Mixed with Non-group Selection Fields
Can Group Functions Be Mixed with Non-group Selection Fields? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements If a group function is used in the SELECT clause, all other selection fields must be group level fields. Non-group fields can not be mixed with group fields in the SELECT clause... 2007-04-20, 5413👍, 0💬

How To Write an Inner Join with the WHERE Clause
How To Write an Inner Join with the WHERE Clause? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements If you don't want to use the INNER JOIN ... ON clause to write an inner join, you can put the join condition in the WHERE clause as shown in the following query example: SQL> SELECT d.depar... 2007-04-19, 5413👍, 0💬

What’s difference between “Optimistic” and “Pessimistic” locking
What’s difference between “Optimistic” and “Pessimistic” locking ? In pessimistic locking when user wants to update data it locks the record and till then no one can update data. Other user’s can only view the data when there is pessimistic locking. In optimistic locking multiple users can open th... 2007-10-24, 5411👍, 0💬

What are major difference between classic ADO and ADO.NET
What are major difference between classic ADO and ADO.NET ? Following are some major differences between both ? As in classic ADO we had client and server side cursors they are no more present in ADO.NET. Note it's a disconnected model so they are no more applicable. ? Locking is not supported due t... 2007-10-24, 5411👍, 0💬

How Arrays Are Passed Through Arguments
How Arrays Are Passed Through Arguments? - PHP Script Tips - Creating Your Own Functions Like a normal variable, an array is passed through an argument by value, not by reference. That means when an array is passed as an argument, a copy of the array will be passed into the function. Modifying that ... 2007-04-24, 5411👍, 0💬

How To Start an Oracle Instance
How To Start an Oracle Instance? - Oracle DBA FAQ - Creating New Database Instance Manually This is Step 6. Now you are ready to start the new Oracle Instance without any database. This instance will be used to create a database. Starting an instance without database can be done by using STARTUP NOM... 2007-04-23, 5411👍, 0💬

What is a candidate key
What is a candidate key ? A table may have more than one combination of columns that could uniquely identify the rows in a table; each combination is a candidate key. During database design you can pick up one of the candidate keys to be the primary key. For example, in the supplier table supplierid... 2007-10-25, 5410👍, 0💬

What Are the Oracle Built-in Data Types
What Are the Oracle Built-in Data Types? - Oracle DBA FAQ - Understanding SQL Basics There are 20 Oracle built-in data types, divided into 6 groups: Character Datatypes - CHAR, NCHAR, NVARCHAR2, VARCHAR2 Number Datatypes - NUMBER, BINARY_FLOAT, BINARY_DOUBLE Long and Row Datatypes - LONG, LONG RAW, ... 2007-04-24, 5410👍, 0💬

How To Use Regular Expression in Pattern Match Conditions
How To Use Regular Expression in Pattern Match Conditions? - MySQL FAQs - Introduction to SQL Basics If you have a pattern that is too complex for LIKE to handle, you can use the regular expression pattern condition: REGEXP. The following tutorial exercise provides you some good examples: SELECT 'FY... 2007-05-11, 5409👍, 0💬

How To Take a Substring from a Given String
How To Take a Substring from a Given String? - PHP Script Tips - PHP Built-in Functions for Strings If you know the position of a substring in a given string, you can take the substring out by the substr() function. Here is a PHP script on how to use substr(): &lt;?php $string = "beginning"; pri... 2007-04-21, 5409👍, 0💬

How to Accessing HTML Elements using javascript?
How to Accessing HTML Elements using javascript? To do something interesting with HTML elements, we must first be able to uniquely identify which element we want. In the example below: &lt;body> &lt;form action=""> &lt;input type="button" id="useless" name="mybutton" value="doNothing" />... 2010-11-23, 5408👍, 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