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New Features of Oracle 10g, Oracle 10g Installation, Server Configuration, and Maintenance of the Software

Memory – 512MB, Temp space – 400MB of free space in the /tmp directory applicable for the Unix operating system, Swap space – 1GB or twice the amount of RAM, Free disk space – 1.5GB are the minimum hardware requirements to install Oracle 10g.
The Installation Type list box is used to decide the type of installation.
Oracle Management Agent (OMA) is a centralized administrative tool that is capable of administering the database server and an application server.
The location (/u01/app/oracle) will be considered as the base of Optimal Flexible Architecture (OFA).
The password file is used to authenticate the administrative tasks from remote locations.
An Oracle 10g client can be used to connect to an Oracle 8i or 9i database by using the following syntax:
Continue reading “OCP 1Z0-040 Short Notes: Exam passing tips”

Creating and Managing Microsoft Windows Services, Serviced Components, .NET Remoting Objects, and XML Web Services

The SessionID property of the HttpSessionState class identifies an active ASP.NET session by using a unique session ID.
The Process.Start method is used to start a Windows application and is registered in the system registry on a computer.
A constructor is used to create an object that is an instance of a class. It has the same name as the class in which it resides.
A sealed class is a class that cannot be derived from. Sealed classes are primarily used to prevent unintended derivation.
If a class derives from the ServiceBase class, the OnCustomCommand method is executed when the Service Control Manager (SCM) passes a custom command to the service. This method is used to specify actions when a command with the specified parameter value occurs.

Overview of Electronic Commerce

B2C stands for business-to-consumer. B2C involves transactions conducted between businesses and consumers over the Internet. For example, placing an order for a book or a home appliance by a consumer to a business over the Internet.

B2B stands for business-to-business. B2B involves transactions conducted between businesses over the Internet. It is used to exchange products, services, or information between businesses. B2B is also known as e-biz.

The World Wide Web Consortium (W3C) is an international industry consortium that develops common standards for the World Wide Web to promote its evolution and interoperability.

E-commerce sites offer a wide access to existing markets. Moreover, they give new access to undiscovered markets. Online stores have many advantages over the traditional stores.

Working with the Photoshop UI

Photoshop enables you to save the positions of all the open palettes as a workspace.

To load a preserved workspace, choose Window > Workspace, and select the workspace from the submenu.

Photoshop lets a user to save the current set of keyboard shortcuts as a workspace.

The Slide Show view option (View > Slide Show) of the Bridge displays a group of images one by one at full screen.

The As Details view option (View > As Details) of the Bridge displays a list of thumbnails along with the information about each file in the main viewing area of the Bridge workspace.

The As Filmstrip view option (View > As Filmstrip) of the Bridge displays thumbnails of files in a scrolling list along with a big preview of the file selected in the list in the main viewing area of the Bridge workspace.

Creating User Services

The SessionID property of the HttpSessionState class identifies an active ASP.NET session by using a unique session ID.
The CodeBehind attribute specifies the name of the compiled file that contains the class associated with the page.
The @ Import directive is used to explicitly import a namespace into an ASP.NET application. The @ Implements directive is used to implement a specified .Net Framework interface in a Web page.
The ErrorPage attribute of the @ Page directive is used to set the URL if an unhandled exception occurs. Sam can set this target to the home page.
A Web page can be converted to a user control via code by the following manner:
1. Change the extension of the Web page from .aspx to .ascx.
2. Create an @ Control directive at the top of the page, instead of an @ Page directive.
3. Remove the <html>, <head>, <body>, and <form> elements from the ASP.NET code.