How many records does the file contain? How many fields are there per record? What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure? If you wanted to produce a listing of the file contents by last name, area code, city, state, or zip code, how would you alter the file structure? What data redundancies do you detect? How could those redundancies lead to different types of anomalies?

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A: Predictive maintenance is a proactive approach used in various industries, including manufacturing,…

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A: Introduction to Cookies and Sessions in Web Applications:Cookies and sessions are fundamental…

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Q: Define a method calcNum() that takes one integer parameter and returns 7 times the parameter. Ex: If…

A:

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A: In the following steps, I have provided complete answer to the question...

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A: The correct solution for the above mentioned question is given in the next steps for your reference

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Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.