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Question 2What is the golden rule for performing SQL joins? (Select all that apply)1 pointFind a related row or record in both tablesFind the linking field or column in both tablesFind the unique and primary keys in both tablesFind a related column or field in both tables

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Question 2What is the golden rule for performing SQL joins? (Select all that apply)1 pointFind a related row or record in both tablesFind the linking field or column in both tablesFind the unique and primary keys in both tablesFind a related column or field in both tables

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Solution

The golden rule for performing SQL joins includes:

  1. Find a related row or record in both tables: This is important because SQL joins are used to combine rows from two or more tables, based on a related column between them.

  2. Find the linking field or column in both tables: This is the common field that exists in both tables. It's the column on which the join will be made.

  3. Find the unique and primary keys in both tables: This is not always necessary for a join, but it's good practice to know the primary keys in your tables. It can help ensure data integrity and can also make your joins more efficient.

  4. Find a related column or field in both tables: This is essentially the same as the second point. You need to identify the common column(s) between the tables on which to make the join.

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