Programs must be declared before they can be used. PL/SQL supports mutual recursion, in which program A calls program B, whereupon program B calls program A. To implement this mutual recursion, you must use a forward declaration of the programs. This technique declares a program in advance of the program...

PL/SQL allows you to define two or more programs with the same name within any declaration section, including a package specification or body. This is called overloading. If two or more programs have the same name, they must be different in some other way so that the compiler can determine which program...

Since WCF web endpoints are opened via HTTP, you can call them from JavaScript inside a browser without any modification on the service side. The endpoints provide URI-accessible functionality, so accessing them from an Ajax application is simply a matter of making the right calls using JavaScript (or...

A regex can be used to look for literal text, text patterns, or a combination of both. To find a match with a PCRE, use the PHP function preg_match(), which normally takes two arguments: a string containing the pattern being searched for and the string to be searched. Although you can pass the pattern...

While the PHP-GTK project is great, in our sample application we really don’t need a desktop view. We do, however, potentially need to do some housekeeping. If we are not careful, our cache can grow huge as our application gets big. While the cache is self cleaning, on an extremely large cache (thousands...

Usage:mediumtext

The mediumtext type has a maximum length of 16,777,215 characters. Indexes can be created on the first 255 characters of a mediumtext column

If the winner comes to claim.php, we first need to check that the claim code exists in the database. The query in the following code grabs queries the database to see if the claim code exists, and if it does, the query performs a join and returns the user information associated with the claim code....

SQLite does not handle binary data natively. To put binary data in a SQLite database, you first need to encode it.Likewise, after a SELECT, you need to decode the encoded binary data.

Although this is one of SQLite's strong points, the fact that SQLite has no server process leads to a series of scaling difficulties: file locking and concurrency issues, lack of persistent query caches, and scaling problems when handling very large data volumes.

Also, the only way to share...

In creating Web-based applications, string handling and manipulation is one of the most critical tasks of the language you work with. Text cleanup and validation is extremely important, and good Web middleware will make working with text rela-tively easy. PHP excels in this department: It contains built-in...

Connect a PrintStream to the file, and then call System.setOut (PrintStream out) that reassigns the "standard" output stream

Poly stands for “many” and morph stands for “form”. It simply means the ability of an object to take more then one form.

GAC stands for global assembly cache that allows the .NET application to share the libraries. And it also help in solving the problem with dll.

C# supports pointers but it required to be specified within the unsafe code.
For example
Unsafe
{
// usage of pointers
}

It is a subclass of Time zone which represent time zone that could be used with Gregorian calendar. It doesn’t handle any changes.
public class SimpleTimeZone
extends TimeZone