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Input Screen Design

Oracle Tips by Burleson Consulting

The Data Warehouse Development Life Cycle

Oracle Data Warehouse Design

Data Warehouse Input Screen Design

In addition to the design of the table structures, the design phase is a good time to take a look at how the end user community will be accessing the table structures. One of the primary goals of the data warehouse designer is to provide a flexible method for the end user to access all of the data that they could possibly desire without going to the IS department to have new input screens created.

Some designers address this issue by providing third-party tools or a spreadsheet metaphor tool for multidimensional queries, but simple design techniques exist for allowing access by custom-designed front ends. The “build versus buy” choices apply to this type of decision. On the one hand, many front ends such as multidimensional spreadsheets have built-in statistical capabilities that are very difficult to replicate with custom written code. On the other hand, many data warehouses provide simple methods for extracting and downloading sets of data into PC files. In these cases, we see that customized front ends are often easier for the end user to use than off-the-shelf solutions.

Creating An SQL Generating Front End

One popular technique for allowing end users to query values in the data warehouse is to design a method that generates SQL according to a series of menu screen selections. The following code examples allow end users to enter constraints in a simple and straightforward fashion.

This is an excerpt from "High Performance Data Warehousing", copyright 1997.

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