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Thank you very much. This was very helpful! 
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Thank you very much. This was very helpful!

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Why is it not good to create indices on every attribute, and ever combination of attributes that is a potential search key? 
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Why is it not good to create indices on every attribute, and ever combination of attributes that is a potential search key? 

Indices on every attribute

Databases are organized collections of data, most commonly accessed through management systems including schemas, tables, queries and processes that allow users to enter and manipulate the information or utilize it in other fashions, such as with web applications or for reporting purposes.