Zip Code Database state
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The state and zip code I will need a list of numbers First, create a good web page name, last name. By By default, this list is sorted by last name. However, click the appropriate column, ZIP code or name it shares, must be Possible alignment star. I understand the database in the background of the table, Or web page. Before you have a layout for a great program We do not need. Any suggestions? What would you use How You Can technology? Thanks!
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Can anyone help me convert this database to 3nf?
ID – unique ID# for each employee
Name – Last,First,Initial
Address
City
State
Zip
Phone
SSN
Job Skill 1: If any, ID#, Name, Proficiency (numeric code)
Job Skill 2: If any, ID#, Name, Proficiency (numeric code)
Job Skill 3: If any, ID#, Name, Proficiency (numeric code)
Pay Code – letter code: Salary Hourly Commission
Pay Rate – numeric base pay rate
Department ID
Department Name
Department Head
Each column must provide information about the key, the whole key and nothing but the key (so help me Codd).
So yeah, you have a boatload of normalization issues here.
1. The name column should be 3 columns. First, Last, Middle (middle initial if you prefer)
2. Job skills are all screwed up. What if someone has 4? It should be a table all in and of itself. In the seperate table, link the employee by their ID to a skill. Available skills should also be defined in a different table. Job skills may have something to do with the key, but repeating columns violates 1nf.
3. Pay code should like to another table, where each code is linked to the actual Pay (S: Salary, H:Hourly and so on.)
4. Department ID is all you need. Name and Head should be in a separate table, with ID being the join.
That should get you moving in the right direction...read over some more reference material to get it all right though.
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