Common Problem With Recycle Bin

11:15 AM

(0) Comments



Some Times Recycle Bin Being Empty Shows That It is filled. This Is Common Problem in Recycle Bin. If you want to empty the recycle bin just in second then please see the steps below:

1: Make New Folder in Any Drive For Example: In The Name Of (New Folder)

2: Then Delete That New Folder File. It Will Go Directly To Your Recycle Bin.

3: Then Right Click On Recycle Bin Select Empty Recycle Bin And Your Problem is Solved.

SexyAmerican

What Are The Web Elements?

7:28 AM

(0) Comments

There Are Mainly Five Types Of Website Elements:

Header: Header in Another word is called the upper body of website where mainly the user finds the description and heading of the website.

Footer: Footer is called the lower body of the website. It is used to provide vital information about the slide.

Navigation's: Navigation in another word is called the buttons or icons of website. It comes in the shape of different buttons from where the user easily navigate the website.

Callouts: Callouts come in the shape of different boxes. Callouts creates a way to display multiple blocks that are related by taxonomy terms.

BodyArea: BodyArea is a place where the user get's full details.

SexyAmerican

Basic SELECT Statement

7:35 AM

(0) Comments

Select *|{[DISTINCT] column|expression [alias],...}
FROM table;

. SELECT identifies what columns
. FROM identifies which table

Basic SELECT Statement

In its simplest form, a SELECT statement must include the following

. A SELECT Clause, which specifies the columns to be displayed
. A FROM clause, which specifies the table containing the columns listed in the SELECT clause

In the syntax:

SELECT is a list of one or more columns

* select all columns

DISTNICT suppresses duplicate

column/expression selects the named columns different headings

alias gives selected columns different headings

FROM table specifies the table containing the columns

Important Note:

. A Keyword refers to an individual SQL element.
For Example, SELECT and FROM are keywords.

. A clause is a part of SQL statement.
For Example, SELECT employee_id, last_name, .... is a clause.

. A statement is a combination of two or more clauses.
For Example, SELECT * FROM employees is a SQL statement.

SexyAmerican

SQL Statements

8:24 AM

(0) Comments

SELECT Data Retrieval. Retrieves Data from the database


INSERT Data manipulation language (DML). Enter new rows, changes existing rows,
UPDATE and removes unwanted rows from tables in the database, respectively.
DELETE Collectively known as data manipulation language (DML).
MERGE

CREATE Data definition language (DDL). Setups, changes, and removes data
ALTER structure from tables. Collectively known as data definition language)
DROP (DDL)
RENAME
TRUNCATE

COMMIT Transaction Control. Manages the changes made by DML statements.
ROLLBACK Changes to the data can be grouped together into logical transactions.
SAVEPOINT

GRANT Data Control language (DCL). Gives or removes access rights to both the
REVOKE Oracle database and the structures within it. Collectively known as data
control language (DCL)

SexyAmerican

What is Oracle? Learn Oracle

3:10 AM

(0) Comments



Oracle is Information company and is a leader in database software and Business intelligence tools.

I guess the first question is really, "What is a database"? A database is an organized collection of data. The data can be textual, like order or inventory data, or it can be pictures, programs or anything else that can be stored on a computer in binary form.

A relational database stores the data in the form of tables and columns. A table is the category of data, like Employee, and the columns are information about the category, like name or address.

Some databases have minimal feature sets and only store data, while others include programming languages, facilities and utilities to support enterprise-level applications like ERP and data warehousing. Oracle is the #1 database and has the most advanced feature set.

Oracle is made up of a set of processes running in your operating system. These processes manage how data is stored and how it is accessed. I will cover these processes in detail in the future; but for now we just need to understand that Oracle is a program that is running in the background, maintaining your data for you and figuring out where it should go on your hard drive.

In almost all relational databases, data is accessed through SQL, or Structured Query Language, and Oracle is no exception. SQL allows you to SELECT your data, INSERT new records, UPDATE existing records and DELETE records you want to get rid of. SQL can be embedded in other languages or you can run scripts of SQL directly against the database.

PL/SQL is the procedural language extension to SQL. PL/SQL is a programming language like C, Java or Pascal. In the Oracle world, there is no better way to access your data from inside a program. SQL can be natively embedded in PL/SQL programs. I will be using both SQL and PL/SQL very heavily in my future articles.

PL/SQL is a feature-rich language geared toward developing database applications. PL/SQL is the procedural language of the database, but it is also the procedural language for most of Oracle's tools. Programs that run inside the database are called stored procedures. These stored procedures are almost always PL/SQL, but can be written in Java.

Some of Oracle's tools to access the database and create programs are:

SQL*Plus has a command line interface. With it, you can access the database and write stored procedures, you can run SQL commands to retrieve data and you can run scripts of either SQL, PL/SQL or built-in SQL*Plus commands, or a mixture of those three things.

Oracle Developer is a 4GL GUI application Builder. With Developer, you can create forms, reports, and graphics. Oracle*Forms and Oracle*Reports are two components of Oracle Developer. Earlier versions created client-server applications, but the more recent versions create web applications that run under the Oracle Application Server (OAS). OAS is a web-based application server sold by Oracle. OAS is licensed separately and is very expensive (as are its closed source competitors). The current version is OAS 10g.

HTML DB is a fairly new application builder geared toward web development (added to the DB with release 9iR2). HTML DB does not need an application server. This tool runs from the database and can be presented to the web using the Apache web server that comes with the database. Since this is not an additional license, it provides a cheaper way to develop applications. Developer is a feature-rich thick client with all of the normal GUI widgets. HTML DB is HTML-based and is very thin and limited to the HTML provided widgets.

Oracle Enterprise Manager (OEM) is the Enterprise GUI tool to manage the database. From this tool, you can perform any action in the database that is required. This tool is primarily used for administration but can also be provided to developers for application tuning and monitoring. In Oracle 10g, OEM also provides Grid control.

There are also a lot of third party tools for accessing the database. For our purposes, our primary tool for data access will be SQL*Plus. In the future, I will cover creating applications with HTML DB and accessing your data with some choice third-party tools.

How about Java? Java is the current hot language, especially on the web. I will also be covering Java in the database in future articles. Java is natively supported by Oracle. Technically, you could use Java to create your stored procedures if you chose, but I am not a proponent of that. When you are working inside the database, I believe that you should only resort to Java when you cannot accomplish a task in PL/SQL. As you'll see, there is very little you cannot accomplish with PL/SQL.

It will be hard to learn Oracle if you can't play with it. So where can you get access to this software? Oracle has a technical web site called OTN (Oracle Tech Net) that provides access to all of Oracle's software and all of the documentation for that software. There are also forums and many other tools to use to help you learn Oracle. You have to register to access it, but registration is free. Go to http://otn.oracle.com/ and get an ID today. In future articles, I will be spending a lot of time accessing this web site to download software and documentation. My next article will cover downloading Oracle 10g and installing it.

As a side note, Oracle provides all of their software with a developer's license. This license allows you to try out the software free of charge. You may not create production applications without a paid license, but development with the tools is acceptable. I am not a lawyer, so I recommend that you review the license when you download any software from OTN.

Also, a note about versioning in Oracle; all products released by Oracle have a version. The current version of the database is 10g Release 1, also written as 10gR1. In addition to this semantic release name, each release has a numeric version. The numeric release for 10gR1 is 10.0.1.3.

Note: This article was previously published in April 2005 on the Suite101.com "Oracle and More!" topic at http://www.suite101.com/welcome.cfm/oracle. This article may have been modified for formatting.

Lewis C

SexyAmerican

What is Adobe Dreamweaver?

8:09 AM

(0) Comments



Adobe Dreamweaver Or Dreamweaver is a web development application Or In Another Words It is Developing Tool. Adobe Dreamweaver Create web pages, structure and declare text, and place images on the page.

SexyAmerican

What is Adobe Flash?

8:03 AM

(0) Comments



Adobe Flash or Simple Flash is basically used for Flash Presentation and also used for the animation work. Two Types Are Mostly Used for the animation work is Flash Animation And Flash Scripting.

SexyAmerican

What is Adobe PhotoShop?

7:59 AM

(0) Comments



Adobe Photoshop Or Simple Photoshop is Basically Designing Tool. It is Mostly Used For Picture Editing and Creation Or To Create Web Interfere Design. Some Examples Are Like Logo Designing, Header Designing And Banner Designing.

SexyAmerican

Creative Commons License
Globalitech by Rafay Ansar is licensed under a Creative Commons Attribution 3.0 Unported License.