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Efficiency in design is very important to a database.
Properly set field types and sizes are critical in the scalability and performance of a database.
As an example a varchar default is a field size of 50 characters. Now if you have a State field that will always contain two characters then a default size of 50 characters would be a big inefficiency. The actual data size stored is slightly padded and the efficiency of your indexes would be degraded as well.
Another consideration is field types. Using a varchar where numeric data is stored is probably one of the biggest mistakes made as far as field definitions are concerned.
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∙ 14y ago
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Is 'A database uses characteristics such as field size and data type to define each field' false?
No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.No it is not false. Database fields do have field sizes and data types.
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