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Hi, I have a quick question regarding the SQL questions in the sample paper. If a question, such as Question 8, specifies a hint to use a subquery, would using JOIN operations instead still be acceptable for a full mark?
Thank you for the quick reply.
In a case if a subclass subclasses don't have their own attributes, then there would be a need to include flags. Is that right?
Hi, I have a few questions related to the the logical modelling section to discuss.
Q1 . When there is mandatory,AND constraints, shouldn't we be putting flag attributes in the single relation? In the sample question it is not included.
Q2. Is there ...
Yea, It would be great if we could perhaps have a slight extension for the project as there are new topics learned, so, I wanted to implement those as well.
Hi,
in the general specifications, it says for occurrences column in relationship data dictionary describe how the relationship exists in the organisation.
How would that differ from what we write in entity relationship data dictionary?