Robert A. Holland
DBM/380
December 11th, 2011
John Nadasky
Database normalization explanation
The normalization level that I chose to use for my database was the 3NF level. This level of normalization was chosen because it would be easy enough to add and take data to without both complications or problems in the database.
This level of normalization states that and is described as follows (Stephens, 2009):
1. Each column must acquit a unmatched name.
2. The order of the rows and columns does not matter.
3. Each column must have a single data type.
4. No two rows bum comport identical values
5. Each column must contain a single value.
6. Columns cannot contain repeating groups.
7. All of the non-key field depend on all of the key fields.
8. It contains no transitive dependencies.
This level is sufficient enough for the database created because many other databases argon created at this level of normalization. It is easy to add or delete data to the database in this level and not have to amaze about relationships being destroyed or running into major(ip) database design flaws.
The relationships and keys depend on each other to be in the database and cannot be deleted because the database depends on them. The keys that were chosen to be utilize in the database were chosen for the fact that the field they are in would never be deleted. This in turn would then puff the relationships stronger and enforce them that they would also stay and not be deleted or changed by any alterations to the database.
The changes that were made to the database were more on a formatting need and to identify the entities more in the database and the tables they were include in. There are no other changes that can be thought of to change the database design. Some fields could be mown and recreated to another field, but then this would leave fields that may possibly end up being empty in the database and have no data....If you want to get a near essay, order it on our website: Ordercustompaper.com
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