Question at position 40 One major disadvantage of the outer join is that information is easily lost.TrueFalse

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Question restatement: The prompt asks whether the statement 'One major disadvantage of the outer join is that information is easily lost' is True or False. Options are: True and False.
Option 1: True. This claim would mean outer joins routinely cause loss of information. In relational databases, an outer join preserves rows from one (left or right) table and combines them with matching rows from the other table; rows with no match still appear, with nulls in the columns from the non-matching side. Therefore, saying information is easily lost is not accurate, as missing matches do not erase existing data from the joined table, they simply introduce nulls for missing side’s attributes. The core idea of an outer join is about including unmatched rows, not about losing information, so this statement mischaracterizes the effect of an outer join.
Option 2: False. This option correctly states that an outer join does not inherently cause information to be lost. It guarantees that rows from the preserved side remain in the result, and only introduces nulls for non-matching counterparts rather than discarding data from either table. While you may encounter nulls or larger result sets, these are consequences of the join semantics, not evidence of information loss.
Why the other option is flawed: If you claim information is easily lost, you’re conflating loss of visibility (seeing no matching data) with loss of data that exists in the tables. Outer joins do not delete or delete-replace data from the underlying tables; they shape the result set to include all relevant rows, with nulls filling in where a match is absent. In practice, the risk in outer joins is handling nulls and potential performance considerations, not wholesale data loss.
In summary, the statement in option True inaccurately describes the behavior of outer joins, whereas option False accurately reflects the join’s semantics: information is not easily lost; unmatched data is represented with nulls, not discarded data from the sources.

Question at position 40 One major disadvantage of the outer join is that information is easily lost.TrueFalse

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