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This is a Customer Management project. Customer data is presented in a text file. The program will load this text data into its DB columns. The data mapping is user definable. User will also define a process to run on the data just before loading into database. Process will be as simple as converting the text to uppercase, lowercase and so on or more complex such as covert code into text e.g 01 becomes Mr, 02 becomes Ms and so on.
After load there is reduplication. The user can select one or more data fields for the system to compare the contents. When the contents match according to a pre-defined percentage then the record is taken a duplicate of each other. Duplicates are tagged as such and only the master record residue as valid. There is a link between master records and duplicates to active users to see the complete history/profile of the master.
Each record in the database is an individual. The ability to update and search records is a necessity.
Campaigns are run by defining a campaign and the criteria which will select which customers will be selected. This will be tagged back to each customer record so that we know which customer before in which campaign.
The preferred tools are SQL Server and VB.NET.
Skills required are Banner Design, SQL, Graphic Design, Visual Basic
If two relations R and S are joined, then the non matching tuples of both R and S are ignored in __________________.
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