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One side effect of normalization is that you often need more than one table to get meaningful results. For example, you may have a table that includes a list of parts and the ID number for the vendor of each part. To find the name or phone number of the vendor, you would have to consult a table that contains vendor information. In many situations, either a join or a nested query will provide the information you need. Sometimes only one approach works, or one approach is better than the other one.
With these thoughts in mind, address the following:
What are the advantages and disadvantages of joins and nested queries?
Identify specific situations in which each technique would be preferred over the other.
Explain your reasoning.
Difference between obsolescent and redundant stocks
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The database application project (DAP) for this course consists of the creation of a fully functional Microsoft Access database application for a real client.
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Proceed with all steps in information-level design to add this user view to existing cumulative design. Is this table in1st NF?___No____ . If Yes skip. If not, write Table in DBDL notation after applying the methodology we use for converting into 1NF..
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Journal entries have to be reconciled with the spreadsheet on a daily basis - Prepare a context diagram for the system and also prepare a diagram 0 DFD for the system
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Create ERD containing Order and Customer entity types connected by 1-M relationship from Customer to Order. Select suiatble relationship name using your common knowledge of intersection.
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