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smart_IT

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Karma Points: 899

Date Posted: 5/16/2008 8:43:56 AM Status: Live

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Response:

Listing Entities:
By approaching the problem intuitively, you can probably identify four different categories of information required by the radio station:

Album information.
Selection information.
Composer information.
Station log information.
These are the entities in the data.

Listing Attributes
Define the attributes of each entity, which are the useful pieces of information to be stored in tables. In addition to supplying informational detail, some attributes are used to distinguish one entity from another. As you subdivide your data, make sure that for each entity you define, at least one attribute can uniquely identify an instance of the entity. This attribute or group of attributes is known as a key.

If you post one question/problem, I will provide 1 input/answer. If you put "x" questions/problems, I will provide"x" inputs/answers. In both cases, appropriate ratings are appreciated for every input. Thanks.

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kami

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