Design a Web page using Ajax for registering an electronic product, either hardware or software. The form should have the purchaser’s name and address, telephone number, email address, and a drop-down list of product categories. When the category is changed, send the category value to the server, which returns an X M L document containing the products for the category, used to create a drop-down list of products. When the customer selects a product, the product value is sent to the server, which returns an X M L document used to create a model or version of the product.

The Web page is illustrated below. The radio buttons are optional, and students may choose not to include them. Their inclusion may work in two ways:


A. They could be used to verify that the selected product was hardware or software

B. They could be used to populate the product category drop-down list. In this case, the product category drop-down list should have the initial value

“—Selection Unavailable—.”

Computer Science & Information Technology

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Try to determine which sets of attributes form keys of R. How would you normalize this relation?

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Computer Science & Information Technology

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Indicate whether the statement is true or false.

Computer Science & Information Technology

The ____ approach to data management was a more efficient and effective means of organizing data than what had been previously available.

a. traditional b. hierarchical c. network d. database

Computer Science & Information Technology

What is the name of the scheme that determines data rates in WLANs?

Computer Science & Information Technology