Final answer:
It is True that in the implicit join syntax, tables are listed in the FROM clause and are separated by a comma. There is no inherent correctness in using either implicit or explicit syntax, as they are stylistic and contextual choices. Readability and clarity often influence the choice of syntax style.
Step-by-step explanation:
The statement that tables in the implicit join syntax — where neither INNER nor OUTER keywords are specified — are listed in the FROM clause and separated by a comma is True. When using implicit join syntax in SQL, tables are indeed listed in the FROM clause and are separated by commas. This method is considered to be a shorthand for INNER JOIN, which combines rows from two or more tables based on a related column between them.
No one table format is considered more correct than the other in regards to implicit or explicit join syntax; the choice boils down to preference and readability. Grouping the data using different join syntaxes has its own advantages. For instance, explicit join syntax with INNER JOIN is generally considered more readable and is the preferred format for complex queries as it clearly indicates the type of join being performed.
The choice to switch between implicit and explicit join syntaxes depends on the context and requirements of the situation. However, readability and clarity are often the driving factors for choosing a particular syntax style. Some database systems may also recommend one syntax style over the other for performance reasons, although modern optimizers typically handle both styles equally well.