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Acquiring a Lock on an Object
What happens when a thread cannot acquire a lock on an object? If a thread attempts to execute a synchronized method or synchronized statement and is unable to acquire an object's lock, it enters the waiting state until the lock becomes available.
2007-03-03, 5671👍, 0💬

What is ManualResetEvent and AutoResetEvent ?
.NET INTERVIEW QUESTIONS - What is ManualResetEvent and AutoResetEvent ? Threads that call one of the wait methods of a synchronization event must wait until another thread signals the event by calling the Set method. There are two synchronization event classes. Threads set the status of ManualReset...
2009-12-29, 5670👍, 0💬

How do we access viewstate value of this page in the next page
How do we access viewstate value of this page in the next page ? View state is page specific; it contains information about controls embedded on the particular page. ASP.NET 2.0 resolves this by embedding a hidden input field name, __POSTBACK . This field is embedded only when there is an IButtonCon...
2007-10-23, 5670👍, 0💬

How To Add Images to Backgrounds
How To Add Images to Backgrounds? - CSS Tutorials - HTML Formatting Model: Block, Inline and Floating Elements One image can be specified to the background at a particular position. It can also be repeated in horizontal direction, vertical direction, or both directions with the following style prope...
2007-05-11, 5669👍, 0💬

Can DIV Elements Be Nested
Can DIV Elements Be Nested? - XHTML 1.0 Tutorials - Understanding DIV and SPAN elements Can "div" elements be nested? The answer is yes. In fact, nested "div" elements provides you more flexibilities to specify CSS properties at different levels. Here is a tutorial example of nested "div" elements: ...
2007-05-12, 5668👍, 0💬

How to Retrieve SQLWarning
How to Retrieve SQLWarning? SQLWarning objects are a subclass of SQLException that deal with database access warnings. Warnings do not stop the execution of an application, as exceptions do. They simply alert the user that something did not happen as planned. A warning can be reported on a Connectio...
2007-04-03, 5668👍, 0💬

How To Add a New Column to an Existing Table
How To Add a New Column to an Existing Table? - MySQL FAQs - Understanding SQL CREATE, ALTER and DROP Statements If you have an existing table with existing data rows, and want to add a new column to that table, you can use the "ALTER TABLE ... ADD COLUMN" statement. The tutorial script below shows ...
2007-05-11, 5667👍, 0💬

What is a SESSION and APPLICATION object
What is a SESSION and APPLICATION object ? Session object store information between HTTP requests for a particular user, while application object are global across users.
2007-10-24, 5666👍, 0💬

What is CODE Access security
What is CODE Access security? CAS is part of .NET security model that determines whether or not a piece of code is allowed to run and what resources it can use while running. Example CAS will allow an application to read but not to write and delete a file or a resource from a folder..
2007-10-22, 5666👍, 0💬

How To Count Groups Returned with the GROUP BY Clause
How To Count Groups Returned with the GROUP BY Clause? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements If you use the COUNT(*) function on groups returned with the GROUP BY clause, it will count the number of rows within each group, not the number of groups. If you want to count the num...
2007-04-19, 5666👍, 0💬

What Are the Attributes of an IMG Element
What Are the Attributes of an IMG Element? - XHTML 1.0 Tutorials - Understanding Inline Images and Image Maps There are 4 commonly used attributes for an "img" element: "src" - Required attribute. Used to specify the URL of the image file. "alt" - Required attribute. Used to specify the name of the ...
2007-05-12, 5665👍, 0💬

What is Query String and What are benefits and limitations of using Query Strings?
.NET INTERVIEW QUESTIONS - What is Query String and What are benefits and limitations of using Query Strings? A query string is information sent to the server appended to the end of a page URL. Following are the benefits of using query string for state management:- * No server resources are required...
2009-07-28, 5661👍, 0💬

What Is Atom 1.0 Standard
What Is Atom 1.0 Standard? - RSS FAQs - Atom Feed Introduction and File Generation Atom is an XML-based document format that describes lists of related information known as "feeds". Feeds are composed of a number of items, known as "entries", each with an extensible set of attached metadata. For exa...
2007-05-12, 5661👍, 0💬

How To Convert Times to Characters
How To Convert Times to Characters? - 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(SYSDATE, 'HH:MI:SS') FROM DUAL; 04:49:49 SELECT TO_CHAR(SYSDATE, 'HH24:MI:SS.FF') FROM DUAL; -- Error: S...
2007-04-23, 5661👍, 0💬

What is SIX sigma
What is SIX sigma? Sigma means deviation in Greek language. Deviation means how much variations exist in a set of data. For instance let’s say in a software maintenance project out of 100 defects 68 defects are rectified to the mark and remaining bounce back that means your bug fixing process is on ...
2007-10-30, 5660👍, 0💬

Where Is the Export Dump File Located
Where Is the Export Dump File Located? - Oracle DBA FAQ - Loading and Exporting Data If you are not specifying the dump directory and file name, the dump file will be stored in the default dump directory with the default file name. The tutorial exercise below tells you find what is your default dump...
2007-05-01, 5660👍, 0💬

How To Write a Query with a Left Outer Join
How To Write a Query with a Left Outer Join? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements If you want to query from two tables with a left outer join, you can use the LEFT OUTER JOIN ... ON clause in the FROM clause. The following query returns output with a left outer join from two ...
2007-04-19, 5660👍, 0💬

Are Java and JavaScript the Same?
Are Java and JavaScript the Same? No. java and JavaScript are two different languages. Java is a powerful object - oriented programming language like C++ and C, whereas Javascript is a client-side scripting language.
2008-07-17, 5659👍, 0💬

How can we use Culture Auto in project
How can we use Culture Auto in project? We will make a simple login screen which we will try to use for English as well as Greek. The login screen will display English settings when an English user logs in and Greek Settings when a Greek user logs in. So below are the steps to start with. In the abo...
2007-11-01, 5659👍, 0💬

How To Submit Values without a Form
How To Submit Values without a Form? - PHP Script Tips - Processing Web Forms If you know the values you want to submit, you can code the values in a hyper link at the end of the URL. The additional values provided at the end of a URL is called query string. There are two suggestions on how to use q...
2007-04-22, 5659👍, 0💬

What is Modeling and why UML ?
What are advantages of using UML? As the name suggest UNIFIED MODELING LANGUAGE. Modelling has been around for years, not only in software field but also in other trades like civil, mechanical etc. Example in civil engineering drawing the main architecture built of diagram is a model by itself. Mode...
2007-10-26, 5658👍, 0💬

What is the difference between DELETE TABLE and TRUNCATE TABLE commands
What is the difference between DELETE TABLE and TRUNCATE TABLE commands? Following are difference between them ? DELETE TABLE syntax logs the deletes thus make the delete operation slow. TRUNCATE table does not log any information but it logs information about deallocation of data page of the table ...
2007-10-25, 5658👍, 0💬

What are the steps to create a webservice and consume it
What are the steps to create a webservice and consume it ? Note :- For this question this book will make a attempt by creating a simple webservice and explaining steps to acheive it. A simple webservice will be created which takes two number and gives addition result of the two number. In CD sample ...
2007-10-23, 5658👍, 0💬

How can you avoid deadlock in threading
How can you avoid deadlock in threading? A good and careful planning can avoid deadlocks.There are so many ways Microsoft has provided by which you can reduce deadlocks example Monitor, Interlocked classes, Wait handles, Event raising from one thread to other thread, ThreadState property which you c...
2007-10-22, 5658👍, 0💬

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