Example: The following relation is in First Normal Form, but not Second Normal Form:
Order #CustomerContact PersonTotal1Acme WidgetsJohn Doe$134.232ABC CorporationFred Flintstone$521.243Acme WidgetsJohn Doe$1042.424Acme WidgetsJohn Doe$928.53
In the table above, the order number serves as the primary key. Notice that the customer and total amount are dependent upon the order number -- this data is specific to each order. However, the contact person is dependent upon the customer. An alternative way to accomplish this would be to create two tables:
CustomerContact PersonAcme WidgetsJohn DoeABC CorporationFred Flintstone
Order #CustomerTotal1Acme Widgets$134.232ABC Corporation$521.243Acme Widgets$1042.424Acme Widgets$928.53
The creation of two separate tables eliminates the dependency problem experienced in the previous case. In the first table, contact person is dependent upon the primary key -- customer name. The second table only includes the information unique to each order. Someone interested in the contact person for each order could obtain this information by performing a JOIN operation.
Yes, the simple machine is a lever if you look at the top of a normal playground swing.
Because it is a very simple example to explain both games theory and rational choice theory. It's simple to explain and really, really easy to understand.
'Do' is used in the simple present tense when using first person, second person, or third person plural. For example: I do, you do and they do. 'Did' is used as the simple past tense of 'do'. For example: I did, you did and they did.
'Do' is used in the simple present tense when using first person, second person, or third person plural. For example: I do, you do and they do. 'Did' is used as the simple past tense of 'do'. For example: I did, you did and they did.
The simple past tense of the word "explain" is "explained."
for example: 34% you move the decimal TWO times to the right: .34 volia! simple.
We use models to explain how life and such is. my example is the sun model. How would you know the orbit of the sun without that model? Now i know its a pretty simple reply but this is a simple question also. just think about it for a while
There are many words that meet the criteria. One simple example is let.
explain the importance of each of the four steps in a simple decision-making models?
Simple chart for normal blood glucose levels...
Glucose is a simple example.
to explain the complex features of simple phenomena